I food
10. Oh! Oh! Oh! I am food, I food, I food! I food-eater, I food-eater, I food-eater! I am the combining agent, I am the combining agent, I am the combining agent. I am the First-born of the existence! Prior to gods, the centre of the immortal. Whoso giveth me, he surely doth thus save. I, the food, eat him who eats food. I the whole being destroy. Light, like the sun!
The Taittiriya Upanishad 3-10, Translated by Alladi Mahadeva Sastry