v. 3. 9.

For all the gods is the fire piled up; if he were not to put (them) down in unison, the gods would divert his fire; in that he puts (them) down in unison, verily he piles them in unison with himself; he is not deprived of his fire; moreover, just as man is held together by his sinews, so is the fire held together by these (bricks). By the fire the gods went to the world of heaven; they became yonder Krttikas; he for whom these are put down goes to the world of heaven, attains brilliance, and becomes a resplendent thing. He puts down the circular bricks; the circular bricks are these worlds; the citadels of the gods are these worlds; verily he enters the citadels of the gods; he is not ruined who has piled up the fire. He puts down the all-light (bricks); verily by them he makes these worlds full of light; verily also they support the breaths of the sacrificer; they are the deities of heaven; verily grasping them he goes to the world of heaven.