YV 2.5e

In that he places two in front, facing the same way, and two behind, facing the same way, (it serves) to make firm the quarters; again, the metres are cattle; verily he makes cattle available for him. He places eight (bricks); the Gayatri has eight syllables, Agni is connected with the Gayatri; verily he piles Agni in his full extent. He places eight; the Gayatri has eight syllables; the Gayatri knows in truth the world of heaven; (verily it serves) to reveal the world of heaven [5]. He places thirteen world-fillers; they make twenty-one, the twenty-onefold Stoma is a support, the Garhapatya is a support, verily he finds support in the support of the twenty- onefold (Stoma), the Garhapatya; he who knows thus finds support in the fire which he has piled. He who first piles (the fire) should pile in five layers; the sacrifice is fivefold, cattle are fivefold; verily he wins the sacrifice and cattle. He who piles for a second time should pile in three layers; these worlds are three; verily he finds support [6] in these worlds. He who piles for a third time should pile in one layer; the world of heaven is in one place; verily he goes to the world of heaven by the single (layer). He makes (them) firm with mortar; therefore the bone is covered with meat; he who knows thus does not become diseased of skin. There are five layers, he makes firm with five (sets of) dust; they make up ten, the Viraj has ten syllables, the Viraj is food; verily he finds support in the Viraj, in proper The Agni that was before and the one in the fire-pan are at variance; 'Be united', with four (verses) he unites them together; the metres are four, Agni's dear body is the metres; verily with his dear body he puts them in order. 'Be united, he says; therefore the kingly power unites with the holy power; in that after uniting (them) he separates (them), therefore the holy power separates from the kingly power.