YV 1.7f

There are a thousand Stotriyas, a thousand gifts (to the priests); the world of heaven is measured by a thousand; (verily it serves) for the winning of the heavenly world. Soma found a thousand; Indra discovered it after him. Yama approached them and said to them, 'May I have a share too in it.' They said to him, 'Be it so.' Yama saw in one of the (cows) strength. He said to them, 'This one has the strength of the thousand, this be mine, the rest yours.' They said, 'We all see that in this one is strength [1]. Let us each have a portion.' So they took shares in the one. They put her into the waters, saying, 'Come out for Soma.' She came out in the shape of a red brown cow of one year old, together with three hundred and thirty three. Therefore let one buy the Soma with a red brown cow one year old. He, who knowing thus buys the Soma with a red brown cow one year old, buys the Soma with three hundred and thirty-three [2] and sacrifices with Soma for which he has paid a good price. They put her into the waters, saying, 'Come out for Indra.' She came out in the shape of a red draught animal with good characteristics, destroying foes, together with three hundred and thirty-three. Therefore one should give a red draught animal with good characteristics, destroying foes. He who knowing thus gives a red draught animal with good characteristics, destroying foes, gives her as three hundred and thirty-three [3]. They put her into the waters' saying, 'Come out for Yama.' She came out in the shape of an aged, stupid, utterly bad animal, together with three hundred and thirty-three. Therefore one should offer as the funeral cow one that is aged, stupid, utterly bad. If a man knowing thus offers a cow that is aged, stupid, utterly bad, as the funeral cow, she becomes for him in yonder world three hundred and thirty-three. Speech is the thousandth. Therefore [4] a boon must be given; for she is a boon, and when she is given she is a thousand.