13.4 Srnu, hear, i.e., having heard, understand; me, from Me, from My utterance; samasena, in brief; about (all) tat, that-the true nature of the field and the Knower of the field, as they have been described; as to yat, what; tat, that-tat stands for that which has been indicated as 'This body' (in verse 1); ksetram, field is, which has been referred to as 'this'; ca, and; yadrk, how it is along with its own alities; yadvikari, what its changes are; ca, and; yatah, from what cause; arises yat, what effect (-arises is understood-); sah ca yah, and who He, the Knower of the field indicated above, is; ca, and; yat-prabhavah, what His powers are. Yat-probhavah is He who is possessed of the powers arising from the adjuncts. The word ca has been used (throughout) in the sense of and. For making the intellect of the hearer interested the Lord praises that true nature of the field and the Knower of the field which is intended to be taught:

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13.4 Hear from Me in brief about (all) that as to what that field is and how it is; what its changes are, and from what cause arises what effect; and who He is, and what His powers are.