Chandogya Upanishad 4.8

4.8.1

madguṣ ṭe pādaṃ vakteti \
sa ha śvo bhūte gā abhiprasthāpayāṃ cakāra \
tā yatra abhisāyaṃ babhūvus tatra agnim upasamādhāya gā uparudhya samidham ādhāya paścād agneḥ prāṅ upopaviveśa \\408.1\

1. A diver-bird will tell you a quarter.’ He then, when it was the morrow, drove the cows on. Where they came at evening, there he built a fire, penned in the cows, laid on fuel, and sat down to the west of the fire, facing the east.

4.8.2

taṃ madgur upanipatya abhyuvāda satyakāma3 iti \
bhagava iti ha pratiśuśrāva \\408.2\

2. A diver-bird flew down to him, and spoke to him, saying: ‘Satyakāma!’ ‘Sir!’ he replied.

4.8.3

brahmaṇaḥ somya te pādaṃ bravāṇi iti \
bravītu me bhagavān iti \
tasmai hovāca \
prāṇaḥ kalā \
cakṣuḥ kalā \
śrotraṃ kalā \
manaḥ kalā \
eṣa vai somya catuṣkalaḥ pādo brahmaṇa āyatanavān nāma \\408.3\

3. ‘Let me tell you, my dear, a quarter of Brahma.’ ‘Tell me, Sir.’ To him it then said: ‘One sixteenth is breath. One sixteenth is the eye. One sixteenth is the ear. One sixteenth is mind. This, verily, my dear, is the quarter of Brahma, consisting of four sixteenths, named Possessing-a-support. 4. He who, knowing it thus, reverences a quarter of Brahma, consisting of four sixteenths, as Possessing-a-support, comes to possess a support in this world. Then he wins worlds possessing a support who, knowing it thus, reverences a quarter of Brahma, consisting of four sixteenths, as Possessing-a-support.’

4.8.4

sa ya etam evaṃ vidvāṃś catuṣkalaṃ pādaṃ brahmaṇa āyatanavān ity upāsta āyatanavān asmiṃl loke bhavati \
āyatanavato ha lokāñ jayati ya etam evaṃ vidvāṃś catuṣkalaṃ pādaṃ brahmaṇa āyatanavān ity upāste \\408.4\