Śatapatha Brāhmaṇa ("of a hundred paths") 8.3.3.10

8.3.3.10

sa yaḥ sa prajāpatirvyasraṃsata | ayameva sa yo 'yamagniścīyate 'tha yānyasmāttāni bhūtāni vyudakrāmannetāstā iṣṭakāstadyadetā upadadhāti yānyevāsmāttāni bhūtāni vyudakrāmaṃstānyasminnetatpratidadhāti

Now that same Pragâpati who became relaxed is this very Agni (fire-altar) that is now being built up; and those living beings which went from him are these bricks: hence when he lays down these (bricks), he thereby puts back into him (Pragâpati-Agni) those same living beings which went from him.