YV 5.6j

He throws down (the remnants) on the high altar; the high altar is cattle, (the grains) for the yoker of bays are cattle verily they make cattle find support in cattle. Offspring and cattle are born through the cups, goats and sheep through the Upançu and Antaryama, men through the Çukra and Manthin, whole-hooved animals through the season-cups, kine through the Aditya cup. The Aditya cup is drawn with the largest number of Rcs; therefore kine axe the most numerous of cattle; in that he thrice draws apart with his hand the Upançu (cup), therefore the female goat gives birth to two or three, but sheep are more numerous. The Agrayana is the father, the tub is the son; if the Agrayana is exhausted, he should draw from the tub; that is as when a father [1] in destitution has recourse to his son. If the tub is exhausted, he should draw from the Agrayana; that is as when a son in destitution has recourse to his father. The Agrayana is the self of the sacrifice; if the cup or the tub should be exhausted, he should draw from the Agrayana; verily from the self he develops the sacrifice. The Agrayana is drawn (with a verse) in which there is no discriminating mark; he draws with a pot, he offers with (the vessel) for Vayu; therefore [2] (a man) is a slayer of a Brahman (through slaying) an embryo which has not been discriminated. They go to the final bath; they deposit the pots, but lift up (the vessels) for Vayu; therefore they deposit a daughter on birth, a son they lift up. In that be utters the Puroruc, it is as when one brings (something) to a superior; in that he draws the cup, it is as when having brought (something) to a superior one proclaims (it); in that he puts it down, it is as when having deposited something with a superior one goes away.