Kṣetra-kṣetra-jñayor jñānam. One should have very clear knowledge that "I am not this body. This is my body." You are not this body; it is your body. You are spirit; I am spirit. We are different from this body. This is the first instruction given in the Bhagavad-gītā in the beginning.
- dehino 'smin yathā dehe
- kaumāraṁ yauvanaṁ jarā
- tathā dehāntara-prāptir
- dhīras tatra na muhyati
- (BG 2.13)
We are not this body. I am not this body; you are not this body. We are changing body every moment, imperceptibly, changing body. Sometimes it is found that the child has grown now to become a boy. But he has not become suddenly a boy. The body has changed. Body has changed every minute. But all of a sudden or at a certain moment we see that the body has changed. So this is real knowledge, that "I am not this body. I am changing my body, and when I shall finally change this body I will get another body." This is my position. Tathā dehāntara-prāptiḥ (BG 2.13).
So Kṛṣṇa says, etad yo vetti taṁ prāhuḥ kṣetra-jñaḥ iti tad-vidaḥ. If one understands that he is not this body, he is different from this body... From practical example and practical experience one can understand it. Especially human being can understand it. And if the human being neglect this understanding, then he remains animal—sa eva go-kharaḥ (SB 10.84.13). That is the injunction of the śāstra.
- yasyātma-buddhiḥ kuṇape tri-dhātuke
- sva-dhīḥ kalatrādiṣu bhauma ijya-dhīḥ
- yat-tīrtha-buddhiḥ salile na karhicij
- janeṣv abhijñeṣu sa eva go-kharaḥ
- (SB 10.84.13)
Yasyātma-buddhiḥ kuṇape tri-dhātuke. This body, according to Ayurvedic system of medicine, this body is made of three elements—kapha, pitta, vāyu: mucus, bile, and cough. So anyway, so tri-dhātuke... This body, is made of material elements. I am spirit soul; I am not material element. Ahaṁ brahmāsmi: "I am spirit soul." This is knowledge. But if one does not take this knowledge, he remains with the bodily concept of life, "I finger," not "my finger," then he is in ignorance. "I head," not "my head." Nobody says, "I head." Everyone says "My head." But find out who is "I." This is knowledge.
Therefore Kṛṣṇa says etad yo vetti: "One who understands this simple education in the beginning, etad yo vetti, "if anyone understands this, that 'I am not this body, I am the owner of the body. I am the occupier of the body...' " The body is just like a rented house, and there are two interested person. One is the occupier, and the other is the owner.
That will be explained, that I am the occupier of this body. I am not actually owner. The owner is Kṛṣṇa, or God. This house is owned by Kṛṣṇa, or God. But, just like the field. The agriculturist, the cultivator, takes the land from the king or the government. He pays little tax, and he works on it. Similarly, everything belongs to God. Īśāvāsyam idaṁ sarvam (ISO 1). Nothing belongs to us. We also belong to God. This is knowledge. But God has given this piece of farm or land for our activities. That will be explained in the next verse. Kṛṣṇa says, kṣetra-jñaṁ cāpi māṁ viddhi (BG 13.3). Kṣetra-jñam means... . Body is kṣetra, and the living entity is the occupier of this body. So Kṛṣṇa said, "There is another occupier, interested person, of this body." Kṣetra-jñaṁ cāpi māṁ viddhi: "That is myself." Kṣetra-jñaṁ cāpi māṁ viddhi sarva-kṣetreṣu bhārata.
So what is the distinction between these two persons? One is the occupier, and the other is the owner. He says, sarva-kṣetreṣu bhārata: "In all different bodies I am the owner." The living entity is the occupier. Just like a big landlord. He has got many houses, and in each house or each apartment there are separate tenants, similarly these, everything, belongs to God. Īśāvāsyam idaṁ sarvam (ISO 1). Everything belongs to God. Nothing belongs to us. But the same relationship—He is the owner; we are simply occupier. There are two persons interested in this body. One is the individual soul, living entity, and the other is the Supersoul, God. He is also within this body.
Where He is staying? Īśvaraḥ sarva-bhūtānāṁ hṛd-deśe 'rjuna tiṣṭhati (BG 18.61). God is living within the core of the heart, and the living entity, he is also living within this core of heart. They are living just like two birds sitting on the branch of one tree. These are the Vedic statement. So there are two birds sitting on the branch of the same tree. One bird is eating the fruit of the tree, and the other bird, simply witnessing. This is the Vedic statement. So the eating bird, we are, living entity. We are eating the fruit as we are working, and the result of our working, we are enjoying. But God, the Supersoul, He is not interested in eating the fruits of the tree. He is self-satisfied. He is simply observing how you are working, because we are working with this body and God is situated in the same heart. So God is there, and we, individual soul, also there.
So then why He is there? Because He is friend. Suhṛdaṁ sarva-bhūtānām (BG 5.29). It is stated in the Vedas that two friendly birds. God is our actual friend, well-wisher friend, suhṛdam. He is simply trying to turn our face towards Him. So long he does not do so, he is changing different body and God is also going with him—He is so friendly—just to advise him in due time, that "Why you are changing from one body to another, one body to another? Why don't you come to Me and live peacefully in blissful life?" That is God's mission. Yadā yadā hi dharmasya glānir bhavati, tadātmānaṁ sṛjāmy aham (BG 4.7).
So God is so great friend of ours. He is always witnessing, witnessing. And as I am desiring, God is giving us facility. "All right, you want to enjoy like this? You take this body and enjoy." Actually you are not enjoying. When we have no discrimination of food, we can eat anything and everything, just like the hogs and pigs, so God says, "All right, you take the body of a pig and hog, and you can eat even up to stool. I give you the facility." That is as we are desiring.
So God is supplying a type of body for our enjoyment.