Kauṣītaki (Śāṅkhāyana) Brāhmaṇa 8.8.40

8.8.40

etasya eva tad rūpam kriyate / (soma: pravargya)

touches the waters, and the waters are healing and medicine, verily thus at the end in the sacrifice are healing and medicine produced. Now they say 'After the pressing should it be put on the fire'; when the Bahiṣpavamāna (Stotra) has been sung, they invoke the two Açvins, the gods; at that moment should they put it on the Agnīdh's fire; just as there in the Upasads, so here on the pressing day the procedure is without taking breath. Then after due performance (the pot) is put on, and the animal sacrifice is undertaken; the Mahāvīra terminates at midday; in that with it they proceed at midday, and the Mahāvīra is he yonder that gives heat, verily thus they delight him; verily thus his symbol is produced.