Bhagavad Gita : Chapter 13

This body is called "kshetra", Arjuna, and that which is conscious of it is called "kshetrajna" by the knowing. This kshetrajna inside all bodies is ME only.

The distinguishing between kshetra and kshetrajna is what I would consider as knowledge.

Listen, Arjuna, what this kshetra is, of what kind, how it changes,from where it comes, I shall tell you in brief, and also of what power he is, the kshetrajna.

It has been sung by many seers of old, separately in various kinds of metre, as well as in the aphorisms of Brahmasootra based on reasoning.

Five elements, ego, intellect, basic nature of things, the ten senses,mind, and five objects of sense, like, dislike, pain, pleasure,body structure, consciousness, endurance are in brief kshetra, with all its manifestations.

Humility, absence of self-glorification, of haughtiness, and of violent temper, patience, straightforwardness, respectfulness towards teachers, cleanliness, steadfastness, self control, lack of attachment to objects of senses, absence of egoism, understanding the essential sadness of existence with its birth,death, decay, and disease, lack of attachment to, and identification with, wife, children, and home,equanimity at all times, undiluted and complete devotion to ME, love of solitude, aversion to crowds, constant study of spiritual texts,and finally contemplation of the fruits of self-realization, these are what is called knowledge.

Ignorance is the opposite of all these.

Now I shall tell you what is worth knowing, by which immortality is achieved. Beginning-less, supreme, it is Brahma; it cannot be said to exist or not to exist.

Legs and hands it has everywhere,it has face sand eyes and mouths everywhere, it has its ears everywhere, it surrounds everything.Exhibiting the properties of all senses, but devoid of all senses,unattached, but supporting all, itself devoid of personal qualities but cause of them, inside and outside of all beings, inert and at the same time active, unperceivable because of its smallness, far away and also near.

Pervading undivided all beings, it appears divided; it nourishes,destroys and produces everything.

Light of all lights, untouched by darkness, knowledge and the known,situated in the hearts of all .

I have thus explained concisely what kshetra, what true knowledge,what the ultimate object of knowledge are.

Know that Nature and universal Person are both without beginning. The various manifestations and their qualities are derived from Nature. Cause and effect relation is also a natural phenomenon. The Person it is who experiences.

The Person entering into Nature experiences the qualities inherent in Nature. That is because of his connection to the sense organs of high as well as low born beings.Watching, permitting, protecting, experiencing, dominating, this Person, also called the Supreme Soul, is quite different from Nature.

He who realizes this Person and Nature with its qualities, is never reborn, whatever and wherever he is.

By meditation, some see the Supreme Self in oneself through oneself;some by the Sankhya practice of reasoned thinking, some through detached action of Karmayoga.

There are others who without this knowledge, but hearing from others,practise.They also, following attentively what they heard, do overcome death.Whatever thing is born, animate or inanimate, is from the union of kshetra and kshetrajna, you may understand.

Only he sees, who sees equally in all beings that supreme Person who never dies when all others die.

He, who sees that supreme Power residing equally everywhere, does not weaken himself, and attains the supreme state.

Only he sees, who sees that all actions are done by Nature alone, and that the Self does not do anything.

When one realizes that all the various forms are of only One Reality and emanate from only it, he becomes united with Brahma.

This supreme immortal Soul, even as he resides in mortal bodies, doe snot act and is not affected, because he is without beginning, and he has no qualities.

Just as the all-pervading space, because of its fineness, is not affected, so the Self residing in all bodies, is not affected.

Just as the one sun illuminates the whole world, so the Self illuminates all the non-self, Arjuna.

Those who, through contemplation, know about this difference between the kshetrajna and the kshetra , and about the liberation from Nature, attain the highest.