Chandogya Upanishad 7.15

7.15.1

prāṇo vāva āśāyā bhūyān \
yathā vā arā nābhau samarpitā evam asmin prāṇe sarvaṃ samarpitam \
prāṇaḥ prāṇena yāti \
prāṇaḥ prāṇaṃ dadāti \
prāṇāya dadāti \
prāṇo ha pitā \
prāṇo mātā \
prāṇo bhrātā \
prāṇaḥ svasā \
prāṇa ācāryaḥ \
prāṇo brāhmaṇaḥ \\715.1\

1. ‘Life (prāṇa, breath), verily, is more than Hope. Just as, verily, the spokes are fastened in the hub, so on this vital breath everything is fastened. Life (prāṇa) goes on with vital breath (prāṇa). Vital breath (prāṇa) gives life (prāṇa); it gives [life] to a living creature (prāṇa). One’s father is vital breath; one’s mother, vital breath; one’s brother, vital breath; one’s sister, vital breath; one’s teacher (ācārya), vital breath; a Brahman is vital breath.

7.15.2

sa yadi pitaraṃ vā mātaraṃ vā bhrātaraṃ vā svasāraṃ vācāryaṃ vā brāhmaṇaṃ vā kiṃcid bhṛśam iva pratyāha \
dhik tvāstv ity evainam āhuḥ \
pitṛhā vai tvam asi mātṛhā vai tvam asi bhrātṛhā vai tvam asi svasṛhā vai tvam asy ācāryahā vai tvam asi brāhmaṇahā vai tvam asīti \\715.2\

2. If one answers harshly, as it were (iva), a father or mother, or brother, or sister, or teacher, or a Brahman, people say to him: “Shame on you! Verily, you are a slayer of your father! Verily, you are a slayer of your mother! Verily, you are a slayer of your brother! Verily, you are a slayer of your sister! Verily, you are a slayer of your teacher! Verily, you are a slayer of a Brahman!”

7.15.3

atha yady apy enān utkrāntaprāṇāñ chūlena samāsaṃ vyatiṣaṃdahet \
naivainaṃ brūyuḥ pitṛhāsīti na mātṛhāsīti na bhrātṛhāsīti na svasṛhāsīti nācāryahāsīti na brāhmaṇahāsīti \\715.3\

3. But if, when the vital breath has departed from them, one should even shove them with a poker and burn up every bit of them, people would not say to him: “You are a slayer of your father,” nor “You are a slayer of your mother,”

nor "You are a slayer of your brother," nor "You are a slayer of your sister," nor "You are a slayer of your teacher," nor "You are a slayer of a Brahman."

7.15.4

prāṇo hy evaitāni sarvāṇi bhavati \
sa vā eṣa evaṃ paśyann evaṃ manvāna evaṃ vijānann ativādī bhavati \
taṃ ced brūyur ativādy: asīti \
ativādy: asmīti brūyāt \
nāpahnuvīta \\715.4\

4. For indeed, vital breath (prāṇa) is all these things. Verily, he who sees this, thinks this, understands this, becomes a superior speaker. Even if people should say to him "You are a superior speaker," he should say "I am a superior speaker." He should not deny it.