Chandogya Upanishad 8.12.6

8.12.6

taṃ vā etaṃ devā ātmānam upāsate \
tasmāt teṣāṃ sarve ca lokā āttāḥ sarve ca kāmāḥ \
sa sarvāṃś ca lokān āpnoti sarvāṃś ca kāmān yas tam ātmānam anuvidya vijānāti \
iti ha prjāpatir uvāca prajāpatir uvāca \\812.6\

'Verily, this is the Ātman whom the gods worship. Therefore all the worlds and all the desired objects are held by them. He obtains all the worlds and all the desired objects, who having known that Ātman (from the teacher and the scriptures) understands it.' Thus spoke Prajāpati—yea, thus spoke Prajāpati.