Chapter 13: Kshetra-kshetrajna-vibhaga-yoga – Distinction between Object Field and its Knower / Verse 31

By explaining the various concepts, Krishna points that all of them finally take the seeker to the Self in himself, the only changeless identity in the entire Creation. Everything else forms the vibrant Prakrti, with its mobile and immobile aspects.

Prakrti by itself will not be able to function. Purusha has to support everything big and small. Even the alternating experiences of sukha and duhkha are indisputably revealed by the Purusha.

To discern the unchanging Purusha and identify with Him, the understanding that all else comes within the orbit of ever-transforming Prakrti, will be the best persuasion for the seeker. Remember Krishna’s first description of kshetra. He included sukha-duhkhas, desire, hatred and awareness in it (13.7).

Purusha stands distinct from all forms of existence and expression. And he is within the body, denoted by the term ‘I’.