YV 1.3c

He should grasp the cup or fill up the beaker, and then begin the litany; a support to the Soma he verily (eva) gives, to the Stoma, to the hymns; the sacrificer finds support, the Adhvaryu finds support. They gather together the sacrifice when (they gather the dust of) the foot-print of the Soma cow; the oblation-holders are the mouth of the sacrifice; when they move forward the oblation-holders, then he should oil the axle with it; verily he extends the sacrifice in the mouth of the sacrifice. They lead Agni forward, they take the wife forward, and they make the carts follow after. Now the altar of him (Agni) is deserted; he broods on it, and is liable to become terrible (rudrá) [1], and lay to rest the offspring and cattle of the sacrificer. When they are leading northward the sacrificial animal over which the Apris have been said, he should take (from the altar the fire) for cooking it; verily he makes him share in it. The Ahavaniya is the sacrificer; if they take (the fire) for cooking the victim from the Ahavaniya, they tear the sacrificer asunder; the fire should therefore be thus, or he should make it by friction, so that the sacrificer's body may remain together. If a portion of the victim be lost, he should cut off an equivalent portion of the butter; that is then the atonement. If men disturb his victim and he wish of them, 'May they come to ruin', he should make an offering in the Agnidh's altar with the Rc containing the word 'paying of homage' (and beginning), 'What then?' Verily he appropriates their paying of homage and speedily do they go to ruin. a The offspring, being born of Prajapati And those that have been born, To him declare them; Lot the wise one reflect thereon. b This victim, O lord of cattle, for thee to-day, I bind, O Agni, in the midst of righteous action; Approve it, and let us sacrifice with a good offering May this offering be welcome to the gods.