CHĀNDOGYA UPANISHAD · 4.3.7

तद् उ ह शौनकः कापेयः प्रतिमन्वानः प्रत्येयाय ।
आत्मा देवानां जनिता प्रजानां हिरङ्यदंष्ट्रो बभसो ऽनसूरिः ।
महान्तम् अस्य महिमानम् आहुर् अनद्यमानो यद् अनन्नम् अत्ति ।
इति वै वयम् ब्रह्मचारिन् नेदम् उपास्महे दत्तास्मै भिक्षाम् इति ॥

tad u ha śaunakaḥ kāpeyaḥ pratimanvānaḥ pratyeyāya ।
ātmā devānāṃ janitā prajānāṃ hiraṅyadaṃṣṭro babhaso ’nasūriḥ ।
mahāntam asya mahimānam āhur anadyamāno yad anannam atti ।
iti vai vayam brahmacārin nedam upāsmahe dattāsmai bhikṣām iti ॥

Saunaka Kâpeya, pondering on that speech, went to the student and said: 'He is the self of the Devas, the creator of all beings, with golden tusks, the eater, not without intelligence. His greatness is said to be great indeed, because, without being eaten, he eats even what is not food. Thus do we, O Brahmakârin, meditate on that Being.' Then he said: 'give him food.'

F. Max Müller · The Upanishads, Sacred Books of the East 1 (1879)