vii. 4. 10.

The theologians say, 'The Atiratra is the highest of the forms of sacrifice. Why do they perform it first?' Now in doing so they really perform in order first the Agnistoma, then the Ukthya, then the Sodaçin, then the Atiratra, all the forms of sacrifice, and seizing and holding them, they keep drinking the Soma. They perform the Jyotistoma first; the Jyotistoma is the beginning of the Stomas; verily they commence the Stomas from the beginning [1]. The Stomas being sung together make up the Viraj, and two verses are redundant; the Gostoma has one too many, and the Ayustoma one too few. The Jyotistoma is the world of heaven, the Viraj is strength; verily by it they go to the world of heaven. 'The Rathantara is used in the day, the Rathantara at night', say the theologians, 'what is used to avoid repetition?' The great Saman of Sobhari is used as the Brahmasaman at the third pressing; it they place in the middle, to separate them; verily there is no repetition.