Kauṣītaki (Śāṅkhāyana) Brāhmaṇa 3.p6

3.p6

iii. 3. In that he summons the deities severally, it is because the oblations are taken separately for them. In that he summons Agni through Agni, the form of Agni which bears the oblation is his sacrificial form. It is what there over yonder sun shines like light; therefore the sun (appears) to every man. Thus in that he says ‘O Agni bring Agni’, verily thus he says ‘That (form) bring.’ In that he invites the gods that drink the butter, thus he invites the fore-offerings and the after-offerings. In that he invites Agni for the Hotṛ's function, thus he invites the Sviṣṭakṛt (offering). In that he invites his own greatness, thus he invites Vāyu; Agni's own greatness is Vāyu, for by him he acquires and attains greatness. In that he recites by order, and sacrifices by order, thereby verily sacrifice is made to his own greatness. ‘Bring, O All-knower, and offer with good sacrifice’, (with these words) he says to him, ‘Bring the gods, O All-knower, and offer to the gods with good sacrifice.’ In that he mutters before the kindling verses, and the kindling verses are a thunderbolt, verily thus he appeases him both before and after. In that he takes up the two ladles with the verse for taking up the ladles, verily thus he yokes a chariot of the gods, being about to bestow the oblation upon the gods. With this chariot of the gods he attains safely the world of heaven.