Jaiminīya (Talavakāra) Brāhmaṇa 2-7.246

2-7.246

By the first day he developed this very [world], what has taken root in it; by the second, what breathes and moves; by the third, that [world] above, what rains, what is the stars, what fell to the share of that world. This, indeed, is the Mahāvrata of the three-day rite: what the Bahiṣpavamāna [stotras] of these days are, that is the head; the two days on either side are the two wings; the middle day is the trunk; the Agniṣṭoma-sāmans are the tail. Moreover, they say: the fact that that [sun] rises, that is the head; the two days on either side are the two wings; the middle day is the trunk; Agni is the tail. Moreover, they say: he who rises there, that is the head; the two days on either side are the two wings; the middle day is the trunk; the fact that he sets, that is the tail.