Taittiriya Upanishad (Brahmānanda Valli, Chapter 2, Verse 2)
aṉnādvai prajāḥ prajāyante | yāḥ kāśca pṛthivīṁśritāḥ | atho annenaiva jīvanti | athainadapi yantyantataḥ | aṉṇaṁ hi bhūtānāṁ jyeṣṭham | tasmāt sarvauṣadhamucyate | sarvaṁ vai te’ṉnamāpnuvanti | ye’ṉnaṁ brahmopāsate | aṉṇaṁ hi bhūtānāṁ jyeṣṭham | tasmāt sarvauṣadhamucyate | aṉnādbhūtāni jāyante | jātānyannena vardhante | adyate’tti ca bhūtāni | tasmādannaṁ taduçyate iti | tasmādvā etasmādanna rasamayaḥ…