Śatapatha Brāhmaṇa ("of a hundred paths") 7.1.2.1

7.1.2.1

prajāpatiḥ prajā asṛjata | sa prajāḥ sṛṣṭvā sarvamājimitvā vyasraṃsata tasmādvisrastātprāṇo madhyata udakrāmadathāsmādvīryamudakrāmattasminnutkrānte 'padyata tasmātpannādannamasravadyaccakṣuradhyaśeta tasmādasyānnamasravanno heha tarhi kā cana pratiṣṭhāsa

Pragâpati produced creatures. Having produced creatures, and run the whole race, he became relaxed. From him, when relaxed, the vital air went out from within: then his vigour went out of him. That having gone out, he fell down. From him, thus fallen, food flowed forth: it was from that eye on which he lay that his food flowed. And, verily, there teas then no firm foundation whatever here.