TAITTIRĪYA UPANISHAD · 2.2

अन्नाद्वै प्रजाः प्रजायन्ते । याः काश्च पृथिवींश्रिताः ।
अथो अन्नेनैव जीवन्ति । अथैनदपि यन्त्यन्ततः ।
अन्नंहि भूतानां ज्येष्ठम् । तस्मात् सर्वौषधमुच्यते ।
सर्वं वै तेऽन्नमाप्नुवन्ति । येऽन्नं ब्रह्मोपासते ।
अन्नंहि भूतानां ज्येष्ठम् । तस्मात् सर्वौषधमुच्यते ।
अन्नाद् भूतानि जायन्ते । जातान्यन्नेन वर्धन्ते ।
अद्यतेऽत्ति च भूतानि । तस्मादन्नं तदुच्यत इति ।
तस्माद्वा एतस्मादन्नरसमयात् । अन्योऽन्तर आत्मा प्राणमयः ।
तेनैष पूर्णः । स वा एष पुरुषविध एव ।
तस्य पुरुषविधताम् । अन्वयं पुरुषविधः ।
तस्य प्राण एव शिरः । व्यानो दक्षिणः पक्षः ।
अपान उत्तरः पक्षः । आकाश आत्मा ।
पृथिवी पुच्छं प्रतिष्ठा । तदप्येष श्लोको भवति ।

annādvai prajāḥ prajāyante । yāḥ kāśca pṛthivīṃśritāḥ ।
atho annenaiva jīvanti । athainadapi yantyantataḥ ।
annaṃhi bhūtānāṃ jyeṣṭham । tasmāt sarvauṣadhamucyate ।
sarvaṃ vai te’nnamāpnuvanti । ye’nnaṃ brahmopāsate ।
annaṃhi bhūtānāṃ jyeṣṭham । tasmāt sarvauṣadhamucyate ।
annād bhūtāni jāyante । jātānyannena vardhante ।
adyate’tti ca bhūtāni । tasmādannaṃ taducyata iti ।
tasmādvā etasmādannarasamayāt । anyo’ntara ātmā prāṇamayaḥ ।
tenaiṣa pūrṇaḥ । sa vā eṣa puruṣavidha eva ।
tasya puruṣavidhatām । anvayaṃ puruṣavidhaḥ ।
tasya prāṇa eva śiraḥ । vyāno dakṣiṇaḥ pakṣaḥ ।
apāna uttaraḥ pakṣaḥ । ākāśa ātmā ।
pṛthivī pucchaṃ pratiṣṭhā । tadapyeṣa śloko bhavati ।

Verily all sorts and races of creatures that have their refuge upon earth, are begotten from food; thereafter they live also by food and ’tis to food again that they return at the end and last. For food is the eldest of created things and therefore they name it the Green Stuff of the Universe. Verily they who worship the Eternal as food, attain the mastery of food to the uttermost; for food is the eldest of created things and therefore they name it the Green Stuff of the Universe. From food all creatures are born and being born they increase by food. Lo it is eaten and it eateth; yea it devoureth the creatures that feed upon it, therefore it is called food from the eating. Now there is a second and inner Self which is other than this that is of the substance of food; and it is made of the vital stuff called Prana. And the Self of Prana filleth the Self of food. Now the Self of Prana is made in the image of a man; according as is the human image of the other, so is it in the image of the man. The main Breath is the head of him, the breath pervasor is his right side and the lower breath is his left side; ether is his spirit which is the self of him, earth is his lower member whereon he resteth abidingly. Whereof this is the Scripture.

Sri Aurobindo · CWSA 18, p. 217