Kaushitaki Upanishad 4.10.6

4.10.6

athādhyātmam //10//

Now with reference to the self.— 11. Then said Bālāki: 'Him who is this person in the mirror—him indeed I reverence.' To him then Ajātaśatru said: 'Make me not to converse on him! As the Counterpart—thus, verily, I reverence him.' He then who reverences him thus—a very counterpart of him is born in his offspring, not an unlikeness. 12. Then said Bālāki: 'Him who is this person in the shadow—him indeed I reverence.' To him then Ajātaśatru said: 'Make me not to converse on him! As the inseparable Double—thus, verily, I reverence him.' He then who reverences him thus, obtains from his double; he becomes possessed of his double. 13. Then said Bālāki: 'Him who is this person in the echo—him indeed I reverence.' To him then Ajātaśatru said: 'Make me not to converse on him! As Life (asu)—thus, verily, I reverence him.' He then who reverences him thus, passes not into unconsciousness (sammoha) before the time.