Kaushitaki Upanishad 4.17

4.17.1

sa hovāca bālākir ya evaiṣa dakṣiṇe 'kṣiṇi puruṣas tam evāham upāsa iti /

17. Then said Bālāki: ‘Him who is this person in the right eye—him indeed I reverence.’ To him then Ajātaśatru said: ‘Make me not to converse on him! As the soul (ātman) of Speech, the soul of fire, the soul of light—thus, verily, I reverence him.’ He then who reverences him thus, becomes the soul of all these.

4.17.2

taṃ hovācājātaśatrur mā maitasmin saṃvādayiṣṭhāḥ /

4.17.3

vāca ātmāgner ātmā jyotiṣa ātmeti vā aham etam upāsa iti /

4.17.4

sa yo haitam evam upāsta eteṣāṃ sarveṣāṃ ātmā bhavati //17//