YV 4.2i

With the same (offering) should he sacrifice who is going to sacrifice with a thousand; verily he produces and gives (it). He who has sacrificed with a thousand should sacrifice with the same (offering) he goes to the end of cattle [3] who sacrifices with a thousand; Prajapati created cattle; he created them with (the offering) of three constituents; he who knowing thus sacrifices, desirous of cattle, with (the offering) of three constituents, creates cattle from the very source whence Prajapati created them; and the thousand resorts to him. He becomes a prey to the gods who having said, 'I shall sacrifice', does not sacrifice; he should sacrifice with (the offering) of three constituents; (the offering) of three constituents [4] is the whole of the sacrifice; verily he sacrifices with the whole of the sacrifice, and does not become a prey to the gods. The cake is on twelve potsherds; these are three (sets of) four potsherds, to bring about the three. There are three cakes, these worlds are three; (verily they serve) to win these worlds. Each one above the other is larger, for so as it were are these worlds. The middle one is made of barley, that is the form of the atmosphere; (verily it serves) for prosperity. He cuts off from all (the cakes) as he sets them up without making a failure. He gives gold; verily he wins brilliance [5]; he gives the silken garment; verily he wins cattle; he gives a cow; verily he wins his prayers; gold is the colour of the Saman, the silken garment of the formulae, the cow of the praises and rejoicings; verily he wins all these colours. Tvastr, his son slain, offered Soma excluding Indra. Indra desired an invitation to the rite, but he did not invite him, (saying), 'Thou hast slain my son.' He made a disturbance of the sacrifice, and forcibly drank the Soma. The remains of it Tvastr cast upon the Ahavaniya (fire), saying, 'Hail! wax great, Indra's foe.