The eye of Prajapati swelled, that fell away, that became a horse; because it swelled (áçvayat), that is the reason why the horse ( áçva) has its name. By the horse sacrifice the gods replaced it. He who sacrifices with the horse sacrifice makes Prajapati whole; verily he becomes whole; this is the atonement for everything, and the cure for everything. All evil by it the gods overcame; by it also the gods overcame (the sins of) Brahman− slaying; all evil [1] he overcomes, he overcomes Brahman−slaying who sacrifices with the horse sacrifice, and he who knows it thus. It was the left eye of Prajapati that swelled; therefore they cut off from the horse on the left side, on the right from other animals. The mat is of reeds; the horse has its birthplace in the waters, the reed is born in the waters; verily he establishes it in its own birthplace. The Stoma is the fourfold one; the bee tore the thigh of the horse, the gods made it whole with the fourfold Stoma; in that there is the fourfold Stoma, (it is) to make whole the horse. PRAPATHAKA IV The Piling of the Fire Altar (continued)