Shatapatha Brahmana 7.5.1.20

7.5.1.20

tānyetānyanyo 'nyena gṛhītāni | tānyanyo 'nyena gṛhītvātmanprāpādayata tadetadannam prapadyamānaṃ sarve devā anuprāpadyantānnajīvanaṃ hīdaṃ sarvam

Those (energies) thus were kept back by one another. Having kept them back by one another, he (Pragâpati) caused them to enter his own self; and that food having entered, all the gods entered along with it; for everything here lives on food.