Chāndogya Upaniṣad 4.13.2

4.13.2

sa ya etam evaṃ vidvān upāste \
apahate pāpakṛtyām \
lokī bhavati \
sarvam ayur eti \
jyog jīvati \
na asya avarapuruṣāḥ kṣīyante \
upa vayaṃ taṃ bhuñjāmo 'smiṃś ca loke amuṣmiṃś ca \
ya etam evaṃ vidvān upāste \\413.2\

1. So then the eastern (Āhavanīya) fire instructed him: 'Breath, space, sky, lightning [are forms of me. But] the Person who is seen in the lightning—I am he; I am he indeed!' 2. [Chorus of the fires :] ‘He who knows and reverences this fire thus, repels evil-doing from himself, becomes possessor of a world, reaches a full length of life, lives long. His descendants do not become destroyed. Both in this world and in the yonder we serve him who knows and reverences this fire thus.’