13.12 'Adhyatma-jnana' is the knowledge that pertains to the self. Reflection for the attainment of knowledge of the truth, namely, being always intent in the thought having for its object the knowledge of the truth. 'Knowledge' is that by which the self is realised. The meaning is that it is the means for the knowledge of the self. The group of attributes mentioned before, beginning with modesty etc., are those that are favourable for the knowledge of the self in association with the body. All the evolutes of Ksetra, which are different from those mentioned above, constitute ignorance, as they are antagonistic to the knowledge of the self.

Now, the nature of Ksetrajna, characterised as the knower in the stanza, 'He who knows it' (13.1), is examined: