Sama Veda II.2.2.16: SPREAD is thy cleansing filter, Brahmanaspati: as prince

1. SPREAD is thy cleansing filter, Brahmanaspati: as prince thou enterest its limbs from every side.
The raw; whose mass bath not been heated. gains not this: they only which are dressed, which bear, attain to it.

2. High in the seat of heaven is placed the scorcher's sieve: its, threads are standing separate, glittering with light.
The swift ones favour him who purifieth this: with brilliancy they mount up to the height of heaven.

3. The foremost spotted Steer bath made the Mornings shine: he bellows, fain for war, among created things.
By his high wisdom have the mighty Sages wrought: the Fathers who behold mankind laid down the germ.