Taittirīyopaniṣat 03.08

अन्नं न निन्द्यात्। तद् व्रतम्। प्राणो वा अन्नम्। शरीरमन्नादम्। प्राणे शरीरं प्रतिष्ठितम्। शरीरे प्राणः प्रतिष्ठितः। तदेतदन्नमन्ने प्रतिष्ठितम्। स य एतदन्नमन्ने प्रतिष्ठितं वेद प्रतितिष्ठति। अन्नवानन्नादो भवति। महान् भवति प्रजया पशुभिर्ब्रह्मवर्चसेन। महान् कीर्त्या ॥८॥

annaṃ na nindyāt। tad vratam। prāṇo vā annam। śarīram annādam। prāṇe śarīraṃ pratiṣṭhitam। śarīre prāṇaḥ pratiṣṭhitaḥ। tad etad annam anne pratiṣṭhitam। sa ya etad annam anne pratiṣṭhitaṃ veda pratitiṣṭhati। annavān annādo bhavati। mahān bhavati prajayā paśubhir brahmavarcasena। mahān kīrtyā ॥8॥

[अन्नं (annaṃ) - food; न (na) - not; निन्द्यात् (nindyāt) - should revile; तद् (tad) - that; व्रतम् (vratam) - vow; प्राणः (prāṇaḥ) - vital breath; वा (vā) - indeed; अन्नम् (annam) - food; शरीरम् (śarīram) - body; अन्नादम् (annādam) - eater of food; प्राणे (prāṇe) - in the vital breath; शरीरम् (śarīram) - body; प्रतिष्ठितम् (pratiṣṭhitam) - is established; शरीरे (śarīre) - in the body; प्राणः (prāṇaḥ) - vital breath; प्रतिष्ठितः (pratiṣṭhitaḥ) - is established; तत् (tat) - that; एतत् (etat) - this; अन्नम् (annam) - food; अन्ने (anne) - in food; प्रतिष्ठितम् (pratiṣṭhitam) - is established; सः (saḥ) - he; यः (yaḥ) - who; एतत् (etat) - this; अन्नम् (annam) - food; अन्ने (anne) - in food; प्रतिष्ठितम् (pratiṣṭhitam) - is established; वेद (veda) - knows; प्रतितिष्ठति (pratitiṣṭhati) - becomes established; अन्नवान् (annavān) - possessed of food; अन्नादः (annādaḥ) - eater of food; भवति (bhavati) - becomes; महान् (mahān) - great; भवति (bhavati) - becomes; प्रजया (prajayā) - by progeny; पशुभिः (paśubhiḥ) - by cattle; ब्रह्मवर्चसेन (brahmavarcasena) - by spiritual lustre; महान् (mahān) - great; कीर्त्या (kīrtyā) - by fame;]

One should not revile food; that is the vow. The vital breath is indeed food; the body is the eater of food. In the vital breath, the body is established; in the body, the vital breath is established. Thus, this food is established in food. He who knows that this food is established in food becomes established. He becomes possessed of food and an eater of food. He becomes great by progeny, by cattle, by spiritual lustre, and great by fame.

Taittirīya Bhāshya 03.08

Testimonial elaborates, reiterating how sage Brugu recognized the Lord's presence in sequence, as one of many forms, from food all the way to bliss. It is the all-pervading Lord Viṣṇu who perceives all the time. Austerity (tapa) arises from the very nature of knowledge, while discernment is from discrimination. Through the ascetic practice of seeking knowledge, one attains the Lord Janardana.

"चक्षुः स चष्टे यद् विष्णुः श्रोत्रं श्रोतृत्वतो विभुः। वाक् च वक्तृत्वतो नित्यं मनो मन्तृत्वतस्तथा॥

"cakṣuḥ sa caṣṭe yad viṣṇuḥ śrotraṃ śrotṛtvato vibhuḥ। vāk ca vaktṛtvato nityaṃ mano mantr̥tvatastathā॥

[चक्षुः (cakṣuḥ) - eye; सः (saḥ) - he; चष्टे (caṣṭe) - perceives; यत् (yat) - which; विष्णुः (viṣṇuḥ) - Viṣṇu; श्रोत्रम् (śrotram) - ear; श्रोतृत्वतः (śrotṛtvataḥ) - from the state of being a hearer; विभुः (vibhuḥ) - the all-pervading; वाक् (vāk) - speech; च (ca) - and; वक्तृत्वतः (vaktṛtvataḥ) - from the state of being a speaker; नित्यं (nityaṃ) - always; मन् (manas) - mind; मन्तृत्वतः (mantr̥tvataḥ) - from the state of being a thinker; तथा (tathā) - thus;]

"He, the all-pervading Lord Viṣṇu perceives all the time - seeing through the eye as observer, hears through the ear as the hearer, speech (is his) as the speaker, and mind (is his) as the thinker, thus.

तपो ज्ञानस्वरूपत्वाद् विज्ञानं तु विवेचनात्। ज्ञानानुसन्धानरूपतपसा तं जनार्दनम्॥

tapo jñānasvarūpatvād vijñānaṃ tu vivecanāt। jñānānusandhānarūpatapasā taṃ janārdanam॥

[तपः (tapaḥ) - austerity; ascetic practice; ज्ञानस्वरूपत्वात् (jñānasvarūpatvāt) - from the nature of knowledge; विज्ञानम् (vijñānam) - discernment; special knowledge; तु (tu) - but; विवेचनात् (vivecanāt) - from discrimination; ज्ञानानुसन्धानरूपतपसा (jñānānusandhānarūpatapasā) - by the austerity in the form of pursuit of knowledge; तम् (tam) - him; जनार्दनम् (janārdanam) - Janardana (epithet of Krishna, the Lord);]

Austerity (tapa) arises from the very nature of knowledge, while discernment is from discrimination. Through the ascetic practice of seeking knowledge, one attains the Lord Janardana.

क्रमाद् भृगुर्व्यजानात् तमन्नादिबहुरूपिणम्। एवं विजानंस्तं विष्णुं तस्मिंस्तु प्रतितिष्ठति॥

kramād bhṛgur vyajānāt tam annādi-bahurūpiṇam। evaṃ vijānaṃs taṃ viṣṇuṃ tasmiṃs tu pratitiṣṭhati॥

[क्रमात् (kramāt) - in order; by sequence; भृगुः (bhṛguḥ) - Bhṛgu (the sage); व्यजानात् (vyajānāt) - knew; discerned; तम् (tam) - him; अन्नादि (annādi) - beginning with food; (anna = food, ādi = beginning with;) बहुरूपिणम् (bahurūpiṇam) - of many forms; एवम् (evam) - thus; विजानन् (vijānan) - knowing; तम् (tam) - him; विष्णुम् (viṣṇum) - Viṣṇu; तस्मिन् (tasmin) - in him; तु (tu) - but; प्रतितिष्ठति (pratitiṣṭhati) - remains established;]

Sage Bhṛgu, in sequence, recognized him as one of many forms, beginning with food. Thus, knowing him as the Lord Viṣṇu, one remains established in him.

मुक्तो भूत्वाऽन्नवांश्च स्यादन्नादश्च सदैव तु। अन्ननामा तु भगवान् विद्वान् तमुपजीवति॥ तद्वांश्च तेन गुप्तत्वाद् ... ॥

mukto bhūtvā'nnavāṁś ca syād annādaś ca sadaiva tu। annanāmā tu bhagavān vidvān tam upajīvati॥ tadvāṁś ca tena guptatvād ... ॥

[मुक्तः (muktaḥ) - liberated; भूत्वा (bhūtvā) - having become; अन्नवांश् (annavāṁś) - possessor of food; च (ca) - and; स्यात् (syāt) - may be; अन्नादः (annādaḥ) - eater of food; च (ca) - and; सदैव (sadaiva) - always; तु (tu) - but; अन्ननामाः (annanāmāḥ) - named after food; तु (tu) - but; भगवान् (bhagavān) - the Lord; विद्वान् (vidvān) - the wise; तम् (tam) - him; उपजीवति (upajīvati) - lives upon; तद्वांश् (tadvāṁś) - his portion; च (ca) - and; तेन (tena) - by him; गुप्तत्वात् (guptatvāt) - due to protection;]

Having attained liberation, one may possess and consume food always; but the wise Lord, called by the name of food, subsists on him, taking his share from him, protected, ...