prabhu kahe,--go-dugdha khao, gabhi tomara mata
vrsa anna upajaya, tate tenho pita
prabhu kahe—the Lord said; go-dugdha khao—you drink cows' milk; gabhi—the cow (is); tomara—your; mata—mother; vrsa—the bull; anna—grains; upajaya—produces; tate—therefore; tenho—he; pita—(is) your father.
The Lord said, "You drink cows' milk; therefore the cow is your mother. And the bull produces grains for your maintenance; therefore he is your father.
Link to this page: https://prabhupadabooks.com/cc/adi/17/153