13:3
तत्क्षेत्रं यच्च यादृक्च यद्विकारि यतश्च यत् ।
स च यो यत्प्रभावश्च तत्समासेन मे शृणु ॥१३- ३॥
tatkShetraM yachcha yaadRRikcha yadwikaari yatashcha yat ।
sa cha yo yatprabhaawashcha tatsamaasena me shRRiNu ॥१३- ३॥
Source: Automatic ITRANS Transliteration
And what that field is like, how it changes, its cause and effect,
And whom it is and what its powers are, hear that summarily from me.
Source: Milind S. Pandit
What the creation is, what it is like, what its transformations are, where the source is, who that creator is, and what His powers are, hear all these from Me in brief.
O scion of Bharata, you should understand that I am also the knower in all bodies, and to understand this body and its owner is called knowledge. That is My opinion.
Source: Bhagavad Gita As It Is