He puts down the naturally perforated brick; the naturally perforated brick is this (earth); verily he puts down the (earth). He makes the horse sniff it; verily he bestows breath upon it; now the horse is connected with Prajapati; verily he piles the fire with Prajapati. The first brick that is put down obstructs the breath of cattle and of the sacrificer; it is a naturally perforated one, to permit the breath to pass, and also to reveal the world of heaven. 'In the fire must the fire be piled', they say; the Brahman [1] is Agni Vaiçvanara, and to him should he hand over the first brick over which a Yajus has been recited; with the Brahman he should deposit it; verily in the fire he piles the fire. Now he who ignorantly puts down a brick is liable to experience misfortune. Three boons should he give, the breaths are three; (verily they serve) to guard the breaths; two only should be given, for the breaths are two; one only should be given, for the breath is one. The fire is an animal here [2]; animals do not find pleasure in want of grass; a brick of Durva grass he puts down, to support animals; with two (verses), for support. 'Arising from every stem', he says, for it finds support with every stem; 'do thou, O Durva, extend us with a thousand, a hundred', he says; Prajapati is connected with a thousand; (verily it serves) to obtain Prajapati. The fact that it has three lines on it is a mark of the gods; the gods put it down with the mark uppermost, the Asuras with the mark undermost [3]; if he desire of a man, 'May he become richer', he should put it down for him mark uppermost; verily he becomes richer; if he desire of a man, 'May he become worse off', he should put his down mark undermost; verily he makes him depressed in accordance with its birthplace among the Asuras, and he becomes worse off. (The brick) has three lines on it; that with three lines is these worlds; verily he excludes its foe from these worlds. When the Angirases went to the world of heaven, the sacrificial cake becoming a tortoise crawled after them [4]; in that he puts down a tortoise, just as one who knows a place leads straight (to it), so the tortoise leads him straight to the world of heaven. The tortoise is the intelligence of animals; in that he puts down the tortoise, animals resort there, seeing their own intelligence; in that the heads of the dead animals are deposited, a burial−ground is made; in that he puts down the living tortoise, he is no maker of a burial−ground, the tortoise is suitable for a dwelling [5]. 'To the pious the winds honey', (with these words) he anoints with curds, mixed with honey; verily he makes him ready; curds is a food of the village, honey of the wild; in that he anoints with curds mixed with honey, (it serves) to win both. 'May the two great ones, heaven and earth', he says; verily with them he encircles him on both sides. He puts it down to the east,' to attain the world of heaven; he puts it down to the east facing west; therefore [6] to the east facing west the animals attend the sacrifice. If he piles the fire without a navel, (the fire) enters the navel of the sacrificer, and is liable to injure him. He puts down the mortar; this is the navel of the fire; verily he piles the fire with its navel, to avoid injury. (The mortar) is of Udumbara wood; the Udumbara is strength; verily he wins strength; in the middle he puts it down; verily in the middle he bestows strength upon him; therefore in the middle men enjoy strength. So large is it, commensurate with Prajapati, the mouth of the sacrifice. He pounds; verily he makes food; he puts (it) down with (a verse) addressed to Visnu; the sacrifice is Visnu, the trees are connected with Visnu; verily in the sacrifice he establishes the sacrifice.