Link to purport by A C Bhaktivedanta Swami Srila Prabhupada

Transcript of Bhakti-Shastri class on this verse by Chaitanya Charan

Bg 13.4

tat kṣetraṁ yac ca yādṛk ca
yad-vikāri yataś ca yat
sa ca yo yat-prabhāvaś ca
tat samāsena me śṛṇu

Synonyms: 

tat — that; kṣetram — field of activities; yat — what; ca — also; yādṛk — as it is; ca — also; yat — having what; vikāri — changes; yataḥ — from which; ca — also; yat — what; saḥ — he; ca — also; yaḥ — who; yat — having what; prabhāvaḥ — influence; ca — also; tat — that; samāsena — in summary; me — from Me; śṛṇu — understand.

Translation: 

Now please hear My brief description of this field of activity and how it is constituted, what its changes are, whence it is produced, who that knower of the field of activities is, and what his influences are.

This is like a summary verse which describes all that are going to come later in the chapter, 

13.4 explained later

(1) how the body is constituted (text 6);

(2) what changes the body undergoes (texts 7 and 20);

(3) how, when and where the body is produced (texts 6, 21 and 22);

(4) the identity of the knower of the field of activities (texts 14–18 and 23) and

(5) the influence of the knower, Prabhava (texts 14–18)

End of transcription.