Khândogya Upanishad: IV, 12

TWELFTH KHANDA. 1. Then the Anvâhârya fire 2 taught him: Water, the quarters, the stars, the moon (these are my forms). The person that is seen in the moon, I am he, I am he indeed. 2. 'He who knowing this meditates on him, destroys sin, obtains the world (of Agni Anvâhârya), reaches his full age, and lives long; his descendants do not perish. We guard him in this world and in the other, whosoever knowing this meditates on him.' 66:2 The altar on the right. Anvâhârya is a sacrificial oblation, chiefly one intended for the manes.