śrī-bhagavān uvāca
ūrdhva-mūlam adhaḥ-śākham
aśvatthaḿ prāhur avyayam
chandāḿsi yasya parṇāni
yas taḿ veda sa veda-vit

Translation of Bhagavad Gita 15.1

The Supreme Personality of Godhead said: It is said that there is an imperishable banyan tree that has its roots upward and its branches down and whose leaves are the Vedic hymns. One who knows this tree is the knower of the Vedas.

Commentary by Sri A.C. Bhaktivedanta Swami Prabhupada of Gaudiya Sampradaya:

After the discussion of the importance of bhakti-yoga, one may question, “What about the Vedas?” It is explained in this chapter that the purpose of Vedic study is to understand Krishna. Therefore one who is in Krishna consciousness, who is engaged in devotional service, already knows the Vedas.

The entanglement of this material world is compared here to a banyan tree. For one who is engaged in fruitive activities, there is no end to the banyan tree. He wanders from one branch to another, to another, to another. The tree of this material world has no end, and for one who is attached to this tree, there is no possibility of liberation. The Vedic hymns, meant for elevating oneself, are called the leaves of this tree. This tree’s roots grow upward because they begin from where Brahma is located, the topmost planet of this universe. If one can understand this indestructible tree of illusion, then one can get out of it.

This process of extrication should be understood. In the previous chapters it has been explained that there are many processes by which to get out of the material entanglement. And, up to the Thirteenth Chapter, we have seen that devotional service to the Supreme Lord is the best way. Now, the basic principle of devotional service is detachment from material activities and attachment to the transcendental service of the Lord. The process of breaking attachment to the material world is discussed in the beginning of this chapter. The root of this material existence grows upward. This means that it begins from the total material substance, from the topmost planet of the universe. From there, the whole universe is expanded, with so many branches, representing the various planetary systems. The fruits represent the results of the living entities’ activities, namely, religion, economic development, sense gratification and liberation.

Now, there is no ready experience in this world of a tree situated with its branches down and its roots upward, but there is such a thing. That tree can be found beside a reservoir of water. We can see that the trees on the bank reflect upon the water with their branches down and roots up. In other words, the tree of this material world is only a reflection of the real tree of the spiritual world. This reflection of the spiritual world is situated on desire, just as a tree’s reflection is situated on water. Desire is the cause of things’ being situated in this reflected material light. One who wants to get out of this material existence must know this tree thoroughly through analytical study. Then he can cut off his relationship with it.

This tree, being the reflection of the real tree, is an exact replica. Everything is there in the spiritual world. The impersonalists take Brahman to be the root of this material tree, and from the root, according to Sankhya philosophy, come prakriti, purusha, then the three gunas, then the five gross elements (panca-maha-bhuta), then the ten senses (dashendriya), mind, etc. In this way they divide up the whole material world into twenty-four elements. If Brahman is the center of all manifestations, then this material world is a manifestation of the center by 180 degrees, and the other 180 degrees constitute the spiritual world. The material world is the perverted reflection, so the spiritual world must have the same variegatedness, but in reality. The prakriti is the external energy of the Supreme Lord, and the purusha is the Supreme Lord Himself, and that is explained in Bhagavad-gita. Since this manifestation is material, it is temporary. A reflection is temporary, for it is sometimes seen and sometimes not seen. But the origin from whence the reflection is reflected is eternal. The material reflection of the real tree has to be cut off. When it is said that a person knows the Vedas, it is assumed that he knows how to cut off attachment to this material world. If one knows that process, he actually knows the Vedas. One who is attracted by the ritualistic formulas of the Vedas is attracted by the beautiful green leaves of the tree. He does not exactly know the purpose of the Vedas. The purpose of the Vedas, as disclosed by the Personality of Godhead Himself, is to cut down this reflected tree and attain the real tree of the spiritual world.

Commentary by Sri Vishvanatha Chakravarthi Thakur of Gaudiya Sampradaya:

The fifteenth chapter states that detachment is the cause of cessation of birth, that the soul is an amsa of the Lord, and that Krsna is superior to matter and the jiva.

The second to last verse of the last chapter stated that by bhakti yoga one attains the status of brahman:

mam ca yo ‘vyabhicarena bhakti-yogena sevate
sa gunan samatityaitan brahma-bhuyaya kalpate
BG 14.26

The question may be asked “How does a person attain brahman by bhakti yoga rendered to the Lord possessing a human form?”

True, I am human in form, but I am the basis of brahman, the supreme shelter of brahman. This statement, which functions as a sutra, forms the beginning of chapter fifteen. You said that the devotee, surpassing the gunas (sa gunan samatitya), attains the status of brahman. What is this material world made of the gunas? Where did the thread begin? Who is that jiva who surpasses samsara by devotion to you? You also spoke of the jiva being qualified for brahman (brahma-bhuyaya kalpate). What is that brahman? And who are you, the basis of the brahman?

Anticipating these questions, the Lord now speaks. First, with use of a metaphor, the material world made of gunas is compared to an asvattha tree. Above all planets, in Satyaloka, lives four-headed Brahma, who is the one root of the tree of the material world, who is composed of mahat tattva, the first sprout from prakrti (urdhva mula). The branches of the tree are below, composed of devas, gandharvas, kinnaras, asuras, raksasa, pretas, bhutas, humans, cows, horses and such beasts, birds, insects, worms, moths, and immobile creatures at the bottom, in the realms of svah, bhuvah and bhu loka.

This asvattha tree is the best tree because it lets one fulfill one’s goals of artha, dharma, kama and moksa. But according to viewpoint of bhakti, asvah means that which will not last till tomorrow (a= not, svah= tomorrow). Asvattha therefore means that which is bound to perish. For the non-devotees however, it appears to be indestructible (avyayam). Chandamsi refers to the Vedas, which expound karma in such verses as the following:

vayavyam svetam alabheta bhumikam

Desiring wealth and power one should sacrifice a white horse in the northwest. Taittiriya Samhita 2.1.1.1

aindram ekadasaka-palam nirvapet prajakamah

Desiring offspring one should offer eleven oblations in the east. Baudhayana Srauta Sutras 13.2.120.7

Because they expand the bondage of the material world they are called the leaves (parnani). With these leaves the tree becomes attractive. He who knows this tree is the knower of the Vedas.

Katha valli sruti says:

urdhva-mulo’vak-sakha eso’ svatthah sanatanah

This eternal asvattha tree has its root is upwards and branches downwards. Katha Upanisad 2.3.1

Commentary by Sri Ramanuja of Sri Sampradaya:

15.1 The Lord said — The Vedas speak of the imperishable ‘Asvattha tree’ called Samsara, which has its ‘roots above and branches below’, in such passages as the following: This Asvattha tree with its roots above and branches below is eternal’ (Ka. U., 6.1), and ‘He who knows the tree with its roots above and branches below’ (Tai. A., 1.11.5). It has its roots above since it has its roots in Brahma (the Creator otherwise known as Hiranyagarbha) who is seated above the seven worlds. It has ‘branches below’ ending with denizens like men, animals, beasts, worms, insects, birds and immovables. It is ‘immutable’ since it cannot be felled, being of the form of a continual flow. It can be felled only at the dawn of perfect knowledge which causes detachment. They say that the leaves of this Asvattha tree constitute the Vedas. ‘The Vedas are said to be the leaves’, since this tree of Samsara increases by actions prompted by worldly desires as taught in certain Srutis as, ‘He who desires prosperity should sacrifice a white animal to Vayu’ (Taitt. Sam., 2.1.1) and ‘The desirer of offspring shall offer to Indra and Agni a sacrifice with eleven cups of rice-cakes’ (Ibid., 2.2.1). Indeed the tree flourishes with the help of leaves. He who knows the Asvattha of such a nature ‘knows the Vedas’. The Vedas also set forth the means of felling this tree of Samsara. He who understands this is called the knower of the Vedas, since knowledge of the nature of the tree to be cut off is helpful to the knowledge concerning the means of felling the tree. This tree spreads downward with men etc., who are the products of their Karma, as branches. It again spreads above into Gandharvas, Yaksas, gods, etc. They are nourished by the Gunas of Sattva etc. They have tender shoots augmented by sense-objects. How does this happen? Sri Krsna explains:

Commentary by Sri Sridhara Swami of Rudra Sampradaya:

Without dispassion spiritual knowledge will not be able to manifest. Therefore the Supreme Lord Krishna clearly delineates the science of spiritual knowledge together with dispassion. In the last two verses of the previous chapter he has emphasized unwavering devotion unto the Supreme Lord which awards entrance into the consciousness of the eternal, imperishable brahman by His grace. But as it is impossible for one bereft of dispassion to ever achieve spiritual knowledge, the compassionate Supreme Lord first expounds the nature of this mundane material existence by the metaphor of asvattha or banyan tree with its roots upwards and its branches downwards and its leaves the Vedic aphorisms. The roots above refers to the root of all the eternal Supreme Lord and the imperishable atma or immortal soul. The branches downward refers to transitory living entities consisiting of the demigods headed by Brahma, who all have a finite span of life in material existence even if they live for millions and billions of years. Transitory is another meaning of asvattha and for the devotees of the Supreme Lord the material world may not last even unto tomorrow. That which lasts until tommorrow is known as stvattha so asvattha is that which will not last until tomorrow. It is avyayam or indestuctible because it is like a continuous stream although ever changing it never stops. The Katha Upanisad III.I beginning urdhva mulo avak shakha states: There is an ancient banyan tree whose roots are above and branches are below. Whose leaves are the Vedas refers to aphorisms in the Vedic scriptures which propound the activities which should be done and the activities which should not be done by human beings. The absolute authority of the Vedic scriptures establish the criteria for all living entities and confirms that this mundane tree provides sanctuary to all living beings by the results of their karmas or reactions to actions which can be compared to the shade of their leaves. One who comprehends this ancient banyan tree with this understanding is therefore spiritually knowledgeable and is praised as a knower of the teachings of the Vedic scriptures.

Commentary by Sri Madhvacharya of Brahma Sampradaya:

Hari OM! The nature of what is known as freedom or bondage in samsara or the perpetual cycle of birth and death is delineated in this chapter by Lord Krishna. The word urdhva means above as in superior to. The Supreme Lord is the superior quality abiding in all virtues. He is superior principle residing within the atma or immortal soul. Urdhva means paramount in all respects. The word andhah means below and is base, mundane and even vile. The branches refer to the jivas or embodied beings who are subjected to transmigration in samsara and they include the demigods also headed by Brahma who lives for billions of years. Although asvattha refers to a banyan tree another meaning is everlasting in the sense that it exists in a continuous stream without changing even though innumerable myriads of jivas are coming and going incessantly. But their coming and going does not change its nature. Whatever form and function it had in the beginning of creation that form and function it will have at all times throughout creation. So that is why it is known as everlasting and indestructible. The word chamdamsi refers to the leaves of the tree which are the aphorisms of the Vedic scriptures which propunds what actions in life are to be performed and what activities are to be performed and the results of violating or adhering to the Vedic injunctions determines the karma or reactions to actions that one will have to experience in joy or misery. These reactions are like the fruits of a tree which can never come about without the leaves.

Now begins the summation.

Hari! Hari OM! What was briefly mentioned in chapter 13 is now elaborated upon by Lord Krishna with further clarification. The roots being distinctly above refer to the Supreme Lord as the universal tree even as the Earth representing prakriti or the material substratum pervading physical existence is the reflection of this tree. Attributes of consciousness represent the primary roots while non-consciousness are the secondary roots. Here the Vedic association of consciousness and unconsciousness as being similar to a tree is well known. The Earth like the demigods activates the conscious and the Supreme Lord becomes the stable and eternal root. The unconscious who are base and vile are put in bondage by a great sense of false ego get attracted by their senses and attached to the elements. The chamdamsi or leaves are the karma due to activity and the fruits are desires such as name, fame, wealth and moksa or liberation from material existence. Another meaning of chamdamsi is to unseal. Thus the words of the Vedic scriptures are called chandas or that which unseals the esoteric meaning of the eternal wisdom of the Vedas.

Commentary by Sri Keshava Kashmiri of Kumara Sampradaya:

In the preceding chapter the Supreme Lord Krishna described the state of bondage the jiva or embodied being is forced to undergo due to being controlled by the three gunas or modes of material nature which keeps one revolving in samsara the perpetual cycle of birth and death. At the end of the chapter He revealed that the only way to become eligible to overcome the three gunas was by bhakti yoga which is exclusive loving devotion unto the Supreme Lord. Indeed one who everyday consistently without cessation worships Lord Krishna with the yoga of exclusive devotion or also to any of His authoratative avatars or incarnations as revealed in Vedic scriptures, certainly becomes eligible for achieving the consciousness of the brahman or spiritual substratum pervading all existence and attain the eternal association of the Supreme Lord in the immortal spiritual worlds.

Now in this chapter He speaks about the Supreme Lords position as paramount to all establishing Him as the highest being and as thus His original spiritual form is the quintessence of all worship along with His authorised avatars or incarnations as revealed in Vedic scriptures. The Supreme Lords form is naturally situated in spiritual perfection endowed with infinite auspicious attributes and qualities far above His external energy prakriti or the material substratum pervading physical existence and beyond the dualities of perishable and imperishable.

Lord Krishna elucidates that the imperishable atma or immortal soul is eligible for attaining the supreme consciousness of the brahman and that they are both direct portions of Himself and that only by exclusive devotion to the Supreme Lord is one able to remove the bondage of samsara the perpetual cycle of birth and death which is indicative of detachment from all other desires and pursuits. This is why in order to properly emphasise detachment the Supreme Lord uses the metaphor of the asvattha or banyan tree which represents material existence and speaks of detachment as the weapon cutting the knots of bondage asunder. One who perceives the reality that this asvattha tree which is transitory existence and which is declared in the Katha Upanisad II.III.I beginning urdhva mulo avak shakha meaning: This ancient tree with roots upwards and branches downwards is certainly transient. Such a tree appears imperishable due to its ever flowing current of samsara which dissolves with atma tattva or realisation of the soul. The beginning or source are the roots comprising the jiva’s or embodied being comprised of the three gunas or modes of material nature originating from prakriti which is the external energy of the primeval Supreme Lord and far above and beyond Brahma’s heavenly planet known as Satyaloka although it is the seventh and topmost planet in the material creation. But a devotee of Lord Krishna transcends all the material worlds and all the heavenly worlds and achieves the eternal spiritual worlds attaining association with the Supreme Lord. It is there in the form of the atma or the immortal soul that is the starting point of this asvattha tree representing material existence and acceptance of a material body by a jiva. With its branches upwards symbolises the fruits or rewards of karma or reactions to actions which are incurred by residence in one of the seven lower or seven higher totalling 14 worlds. Beginning with Satyaloka and descending down through seven worlds until reaching the seven subterranean worlds ending with Pataloka. The leaves are symbolised by the injunctions and prohibitions of the Vedic scriptures. This is because a tree is nourished by its leaves and the jivas who follow the injunctions enjoined in the Vedic scriptures are also nourished by this tree and the tree itself prospers by the optional rituals performed by the jivas. The Apastambha Srauta Sutra X:II:I states: This asvattha tree of material existence is resorted to by humans full of desires for rewards in its shade in the form of fruitive actions.

The essence is that this tree of material existence is rooted in prakriti comprised of the three gunas or modes of material nature. Its branches are the fourteen material worlds which provide pleasure and enjoyments based on the performance of meritorious deeds. Its leaves are the Vedic scriptures by whose injunctions when followed lead to its growth and allow its performers to enjoy their rewards for all the innumerable and uncountable jivas from Brahma downwards. Thus the tree is transitory by nature but appears everlasting because of its perpetual flowing in samsara and because it is only by knowledge of the Supreme Lord Krishna and bhakti or exclusive loving devotion to Him which is all jivas natural, constitutional position and an eternal activity; that this tree can be transcended. This esoteric wisdom is verily the essence of the Vedic scriptures and one who comprehends and realises this in reality is factually a knower of the Vedas.  In the preceding chapter the Supreme Lord Krishna described the state of bondage the jiva or embodied being is forced to undergo due to being controlled by the three gunas or modes of material nature which keeps one revolving in samsara the perpetual cycle of birth and death. At the end of the chapter He revealed that the only way to become eligible to overcome the three gunas was by bhakti yoga which is exclusive loving devotion unto the Supreme Lord. Indeed one who everyday consistently without cessation worships Lord Krishna with the yoga of exclusive devotion or also to any of His authoratative avatars or incarnations as revealed in Vedic scriptures, certainly becomes eligible for achieving the consciousness of the brahman or spiritual substratum pervading all existence and attain the eternal association of the Supreme Lord in the immortal spiritual worlds.

Now in this chapter He speaks about the Supreme Lords position as paramount to all establishing Him as the highest being and as thus His original spiritual form is the quintessence of all worship along with His authorised avatars or incarnations as revealed in Vedic scriptures. The Supreme Lords form is naturally situated in spiritual perfection endowed with infinite auspicious attributes and qualities far above His external energy prakriti or the material substratum pervading physical existence and beyond the dualities of perishable and imperishable.

Lord Krishna elucidates that the imperishable atma or immortal soul is eligible for attaining the supreme consciousness of the brahman and that they are both direct portions of Himself and that only by exclusive devotion to the Supreme Lord is one able to remove the bondage of samsara the perpetual cycle of birth and death which is indicative of detachment from all other desires and pursuits. This is why in order to properly emphasise detachment the Supreme Lord uses the metaphor of the asvattha or banyan tree which represents material existence and speaks of detachment as the weapon cutting the knots of bondage asunder. One who perceives the reality that this asvattha tree which is transitory existence and which is declared in the Katha Upanisad II.III.I beginning urdhva mulo avak shakha meaning: This ancient tree with roots upwards and branches downwards is certainly transient. Such a tree appears imperishable due to its ever flowing current of samsara which dissolves with atma tattva or realisation of the soul. The beginning or source are the roots comprising the jiva’s or embodied being comprised of the three gunas or modes of material nature originating from prakriti which is the external energy of the primeval Supreme Lord and far above and beyond Brahma’s heavenly planet known as Satyaloka although it is the seventh and topmost planet in the material creation. But a devotee of Lord Krishna transcends all the material worlds and all the heavenly worlds and achieves the eternal spiritual worlds attaining association with the Supreme Lord. It is there in the form of the atma or the immortal soul that is the starting point of this asvattha tree representing material existence and acceptance of a material body by a jiva. With its branches upwards symbolises the fruits or rewards of karma or reactions to actions which are incurred by residence in one of the seven lower or seven higher totalling 14 worlds. Beginning with Satyaloka and descending down through seven worlds until reaching the seven subterranean worlds ending with Pataloka. The leaves are symbolised by the injunctions and prohibitions of the Vedic scriptures. This is because a tree is nourished by its leaves and the jivas who follow the injunctions enjoined in the Vedic scriptures are also nourished by this tree and the tree itself prospers by the optional rituals performed by the jivas. The Apastambha Srauta Sutra X:II:I states: This asvattha tree of material existence is resorted to by humans full of desires for rewards in its shade in the form of fruitive actions.

The essence is that this tree of material existence is rooted in prakriti comprised of the three gunas or modes of material nature. Its branches are the fourteen material worlds which provide pleasure and enjoyments based on the performance of meritorious deeds. Its leaves are the Vedic scriptures by whose injunctions when followed lead to its growth and allow its performers to enjoy their rewards for all the innumerable and uncountable jivas from Brahma downwards. Thus the tree is transitory by nature but appears everlasting because of its perpetual flowing in samsara and because it is only by knowledge of the Supreme Lord Krishna and bhakti or exclusive loving devotion to Him which is all jivas natural, constitutional position and an eternal activity; that this tree can be transcended. This esoteric wisdom is verily the essence of the Vedic scriptures and one who comprehends and realises this in reality is factually a knower of the Vedas.

Commentary by Sri Adi Shankaracharya of Advaita Sampradaya:

15.1 Urdhva-mulam, that which has its roots upwards:- Brahman, possessed of the unmanifest power in the form of Maya, is referred to by the word ‘upward’ because of Its subtleness in point of time by virtue of Its being the Cause, and also because of Its eternality and vastness; and That is the root (mulam) of this world. The Tree of the World which is such, is urdhva-mulam. This accords with the Upanisadic text, ‘This has its roots above and branches below’ (Ka. 2.6.1). In the Purana also we have: It sprouts from the Root in the form of the Unmanifest; it grows through the sturdiness of that very One. And it has abundance of intelligence as its trunk, and the appertures of the organs as the hollows. The great elements are its boughs [A.G. takes the word visakha (boughs) in the sense of stambha, perhaps meaning the aerial roots.-Tr.]; so also, it has the objects of perception as its leaves. It has virtue and vice as its beautiful flowers, and happiness and sorrow are the fruits it bears. This eternal Tree presided over by Brahman is a means of livelihood to all creatures. And this verily is the resort of Brahman [Or, etat brahma-vanam means: This Tree has Brahman as its object of adoration, its support. For, the world has nothing but Brahman as its support.] in it Brahman dwells for ever. Having felled and split this Tree with the great sword of Knowledge, and then attaining the bliss of the Self, one does not return from that (bliss).’ (Cf. Mbh. As. 47.12-15.) That Tree which has its roots upwards and is constituted by the enchantment of mundane existence, and adhah-sakham, which has the branches downwards-mahat, [See under 7.4.-Tr.] egoism, subtle elements, etc. are its branches (sakhah), as it were, extending downwards (adhah); so, it has its branches downwards-; that Tree with its branches downwards, which does not (a) last (stha) even for the morrow (svah), is asvatthah (lit. Peepul tree). Ahuh, they say; that the asvatthah, Peepul Tree, undergoing destruction every moment; is avyayam, imperishable, and constituted by the enchantments of mundane existence. Having been in existence from time without beginning, that Tree of the World is imperishable. It is, indeed, will known as the sustainer of the beginningless and ceaseless series of bodies etc. They call that the imperishable. Of that very Tree of the World here is another qualification: Yasya, that Tree of the World of which; chandamsi-chandas being derived in the sense of covering (protecting)-, the Vedas in the form of Rk, Yajus and Sama; are the parnani, leaves, as it were. As leaves serve as protectors of a tree, so the Vedas serve as the protectors of the world; for they reveal what are virtue and vice as also their causes and results. Yah, he who; veda, knows; tam, that-the Tree of the World along with its root, as has been explained; sah, he; is a vedavit, knower of the Vedas, i.e. versed in the meaning of the Vedas. Since, apart from this Tree of the World along with its root, not even an iota of any other thing remains to be known, therefore he who knows the purport of the Vedas is omniscient. In this way the Lord euligizes the knowledge of the Tree together with its root. An imagery of the other parts of that very Tree of the World is being presented:

Commentary by Sri Abhinavagupta of Kaula Tantra Sampradaya:

15.1-2 Urdhva-mulam etc. Adhas ca etc. In other scriptural texts it is delcared ‘All is the holy Fig-tree; that alone is to be meditated upon’. The present verse tells us this : What is intended by that declaration is only the religious meditation of the Brahman, the Bhagavat. Root : the one with a highly tranquil nature. That is high (above) : Becasue it can be attained by him alone who has withdrawn himself from every other [lower] thing. The [Vedic] hymns are the leaves [of it] etc. : Just as the girth, height, the fruits and the taste etc. of a tree are indicated by its leaves, in the same fashion the idea of the Brahman-being is through the scriptures that are included in the ‘Vedic hymns’. This is what is narrated here. With Strands : i.e., with the Sattva etc. Well developed : i.e., starting from gods down to the stationary ones. Of this tree, the roots, that are below, are the good and bad actions.

Sanskrit Shloka Without Transliteration Marks:

sri-bhagavan uvaca
urdhva-mulam adhah-sakham
asvattham prahur avyayam
chandamsi yasya parnani
yas tam veda sa veda-vit

Sanskrit to English Word for Word Meanings:

śrī-bhagavān uvāca — the Supreme Personality of Godhead said; ūrdhva-mūlam — with roots above; adhaḥ — downwards; śākham — branches; aśvattham — a banyan tree; prāhuḥ — is said; avyayam — eternal; chandāḿsi — the Vedic hymns; yasya — of which; parṇāni — the leaves; yaḥ — anyone who; tam — that; veda — knows; saḥ — he; veda-vit — the knower of the Vedas.