Chandogya Upanishad (with commentary) · Chapter 7.9

ChUpBh_7,8.1-2 balaṃ vāva vijñānādbhūyaḥ /
balamityannopayogajanitaṃ manaso vijñeye pratibhānasāmarthyam /
anaśanādṛgādīni na vai mā pratibhānti bho iti śruteḥ /
śarīre 'pi tadevotthānādisāmarthyaṃ yasmādvijñānavatāṃ śatamapyekaḥ prāṇī balavānā kampayate yathā hastī matto manuṣyāṇāṃ śataṃ samuditamapi /
yasmādevamannādyupayoganimittaṃ balaṃ tasmātsa puruṣo yadā balī balena tadvānbhavatyathotthātotthānasya kartottiṣṭhaṃśca gurūṇāmācāryasya ca paricaritā paricaraṇasya śuśrūṣāyāḥ kartā bhavati paricarannupasattā teṣāṃ samīpago 'ntaraṅgaḥ prayo bhavatītyarthaḥ /
upasīdaṃśca samīpyaṃ gacchannekāgratayā'cāryasyānyasya copadeṣṭurgurordraṣṭā bhavati /
tatastaduktasya śrotā bhavati /
tata idamebhiruktamevamupapadyata ityupapattito mantā bhavati manvānaśca boddhā bhavatyevamevedamiti /
tata evaṃ niścitya taduktārthasya kartānuṣṭhātā bhavati vijñātānuṣṭhānaphalasyānubhavitā bhavatītyarthaḥ /
kiñca balasya māhātmyaṃ balena vai pṛthivī tiṣṭhatītyādyujvartham //1-2 //
iti cchāndogyopaniṣadi saptamādhyāyasyāṣṭamaḥ khaṇḍaḥ
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START ChUp 7,9.1
annaṃ vāva balād bhūyaḥ |
tasmād yady api daśa rātrīr nāśnīyāt |
yady u ha jīvet |
athavādraṣṭāśrotāmantāboddhākartāvijñātā bhavati |
athānnasyāye draṣṭā bhavati śrotā bhavati mantā bhavati boddhā bhavati kartā bhavati vijñātā bhavati |
annam upāssveti

ChUpBh_7,9.1 annaṃ vāva balādbhūyaḥ /
balahetutvāt /
kathamannasya balahetutvamityucyate /
yasmādbalakāraṇamannaṃ tasmādyadyapi kaściddaśa rātrīrnāśnīyātso 'nnopayogānimittasya balasya hānyā mriyate na cenmriyate yadyu ha jīvet /
dṛśyante hi māsamapyanaśnanto jīvantaḥ /
athavā sa jīvannapyadraṣṭā bhavati gurorapi tata evāśrotetyādi pūrvaviparītaṃ sarvaṃ bhavati /
atha yadā bahūnyahānyanaśito darśanādikriyāsvasamarthaḥ sannannasyā'yī /
āgamanamāyo 'nnasya prāptirityarthaḥ /
sā yasya vidyate so 'nnasyā'yī /
āya ityetadvarṇavyatyayena /
athānnasyā'yā ityapi pāṭha evamevārthaḥ /
draṣṭetyādikāryaśravaṇāt /
dṛśyate hyannopayoge darśanādisāmarthyaṃ na tadaprāptāvato 'nnamupāḥsveti //1 //
START ChUp 7,9.2
sa yo 'nnaṃ brahmety upāste |
annavato vai sa lokān pānavato 'bhisidhyati |
yāvad annasya gataṃ tatrāsya yathākāmacāro bhavati yo 'nnaṃ brahmety upāste |
asti bhagavo 'nnād bhūya iti |
annād vāva bhūyo 'stīti |
tan me bhagavān bravītv iti