yad-vikari yatas ca yat

sa ca yo yat-prabhavas ca

tat samasena me srnu

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

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.

chandobhir vividhaih prthak

brahma-sutra-padais caiva

hetumadbhir viniscitaih

ṛṣibhiḥ—by the wise sages; bahudhā—in many ways; gītām—described; chandobhiḥ—Vedic hymns; vividhaiḥ—in various; pṛthak—variously; brahma-sūtra—the Vedānta; padaiḥ—aphorism; ca—also; eva—certainly; hetumadbhiḥ—with cause and effect; viniścitaiḥ—ascertain.

That knowledge of the field of activities and of the knower of activities is described by various sages in various Vedic writings-especially in the Vedānta-sūtra-and is presented with all reasoning as to cause and effect.

buddhir avyaktam eva ca

indriyani dasaikam ca

panca cendriya-gocarah

iccha dvesah sukham duhkham

sanghatas cetana dhrtih

etat ksetram samasena

sa-vikaram udahrtam<