Muṇḍaka Upaniṣad 2.2.7-8

2.2.7

yaḥ sarvajñaḥ sarvavid yasyaiṣa mahimā bhuvi.
divye brahmapure hy eṣa vyomny ātmā pratiṣṭhitaḥ.

7. He who is all-knowing, all-wise,
Whose is this greatness on the earth—
He is in the divine Brahma city
And in the heaven established! The Soul (Ātman)!
Consisting of mind, leader of the life-breaths and of the body,
He is established on food, controlling the heart.
By this knowledge the wise perceive
The blissful Immortal that gleams forth.

2.2.8

manomayaḥ prāṇaśarīranetā pratiṣṭhito 'nne hṛdayaṃ sannidhāya.
tad vijñānena paripaśyanti dhīrā ānandarūpam amṛtaṃ yad vibhāti.