YV 1.2d

He who is long ill should offer to Agni (a beast) with black neck, and a brown (beast) to Soma; the body of him whose illness is long goes to Agni, the sap to Soma; verily he ransoms from Agni his body, from Soma his sap, and even if his life is gone, yet he lives. He who desires offspring should offer to Soma a brown (beast), and to Agni one with a black neck; Soma [7] is the depositor of seed, Agni the producer of offspring; verily Soma deposits seed for him, Agni produces offspring; he obtains offspring. The Brahman who despite study does not win fame should offer to Agni (a beast) with a black neck, and to Soma a brown (one); in that (the beast) is offered to Agni, thereby he places brilliance in him; in that (the beast) is offered to Soma, thereby (be places) splendour. The one with a black neck is for Agni; verily he drives away the darkness from him: it is white [8]; verily he bestows brilliance on him. There is a brown one for Soma; verily he bestows splendour and radiance on him. He who has a dispute for a Purohitaship should offer (a beast) with a black neck to Agni, a brown one to Soma, and one with a black neck to Agni; the Brahman is connected with Agni, the prince with Soma; on either side of (the beast) for Soma there is one for Agni; verily with brilliance, with the Brahman, he seizes on either side the kingdom, and forthwith appropriates it; they choose him as Purohita. The gods and the Asuras strove for these worlds; Visnu saw this dwarf, he offered it to its own deity; then he conquered these worlds. One who is engaged in a struggle should offer a dwarf (beast) to Visnu; then he becomes Visnu and conquers these worlds. He should offer on an uneven (place), for these worlds are uneven as it were; (verily it serves) for prosperity. He who is engaged in a contest should offer (a beast) with a spot on its forehead and horns bent forward to Indra, the angry, the wise [1]. By power (indriyá), by anger, by wisdom, one wins a contest.