YV 2.5j

Prajapati created creatures with the Brahman class as first; verily the sacrificer creates offspring with the Brahman as first; 'the holy power born', he says; therefore the Brahman is the first; the first he becomes who knows thus. The theologians say, 'Nor on earth, nor in the atmosphere, nor on sky should the fire be piled'; if he were to pile (it) on earth, he would afflict the earth with pain; nor trees, nor plants would [1] be born; if he should pile (it) in the atmosphere, he would afflict the atmosphere with pain, the birds would not be born; if he should pile (it) in the sky, he would afflict the sky with pain, Parjanya would not rain. He puts down a gold disk; gold is immortality; verily in immortality he piles the fire, for propagation. He puts down a golden man, to support the world of the sacrificer; if he were to put it over the perforation in the brick, he would obstruct the breath of cattle and of the sacrificer; he puts it down on the south side [2] with head to the east: he supports the world of the sacrificer; he does not obstruct the breath of cattle and the sacrificer. Or rather he does place it over the perforation of the brick, to allow the breath to pass out. 'The drop hath fallen', (with these words) he touches it; verily he establishes it in the Hotr's offices. He puts down two ladles, one made of Karsmarya and full of butter, one of Udumbara and full of curds; that made of Karsmarya is this (earth), that of Udumbara is yonder (sky); verily he deposits these two (earth and sky) [3].