Śatapatha Brāhmaṇa ("of a hundred paths") 6.1.3.11

6.1.3.11

tamabravītsarvo 'sīti | tadyadasya tannāmākarodāpastadrūpamabhavannāpo vai sarvo 'dbhyo hīdaṃ sarvaṃ jāyate so 'bravījjyāyānvā ato 'smi dhehyeva me nāmeti

He said to him, 'Thou art Sarva.' And because he gave the him that name, the waters became suchlike, for Sarva is the waters, inasmuch as from the water everything (sarva) here is produced. He said, 'Surely, I am mightier than that: give me yet a name!'