vi. 6. 7.

They kill the Soma in that they press it; in that there is (an oblation) of Soma, that is as when they slay for the dead a barren cow. If he were to offer in the northern half or the middle, he would cause conflict with the gods; he offers on the southern half; this is the quarter of the Pitrs; verily in their own quarter he propitiates the Pitrs. They give to the Udgatrs, (the oblation) of Soma has the Saman for its deity; whatever of the Saman they do amiss, that is the atonement for it. They look at [1] (the victim) for Soma is a purifier; verily they purify themselves. He who cannot see himself would be dead. Having made it full all round, he should look at (it), for in it he sees himself; verily also he purifies himself. He whose mind is gone should look at (it), (saying), 'That mind of mine which hath gone away, or which hath gone elsewhere, by means of King Soma, we keep within us'; verily he keeps his mind in himself [2], his mind is not gone. At the third pressing the sacrifice departs from him who has sacrificed to him who has not sacrificed; he offers ghee with a verse to Agni and Visnu; all the deities are Agni, the sacrifice is Visnu; verily he supports the deities and the sacrifice. He sacrifices muttering, for pairing. The theologians say, 'Mitra appropriates the well-performed part of the sacrifice, Varuna the ill-performed; where then is the sacrifice, and where the sacrificer?; In that he offers a cow to Mitra and Varuna, by Mitra [3] he propitiates the well-performed part of the sacrifice, by Varuna the ill-performed; the sacrificer is not ruined. Even as men plough the field with the plough, so do the Rc and the Saman plough the sacrifice; in that he offers a cow to Mitra and Varuna, verily he rolls a roller over the ploughed-up sacrifice, for atonement. The metres of him who has sacrificed are worn out, the cow is the sap of the metres; in that he offers the cow to Mitra and Varuna, he again delights the metres, to drive away weariness; verily also he bestows sap upon the metres.