Śatapatha Brāhmaṇa ("of a hundred paths") 8.2.2.4

8.2.2.4

yadveva vaiśvadevīrupadadhāti | ye vai te viśve devā etāṃ dvitīyāṃ citimapaśyanye ta etena rasenopāyaṃsta ete tānevaitadupadadhāti tā etāḥ sarvāḥ prajāstā retaḥsicorvelayopadadhātīme vai retaḥsicāvanayostatprajā dadhāti tasmādanayoḥ prajāḥ sarvata upadadhāti sarvatastatprajā dadhāti tasmātsarvataḥ prajā diśyā anūpadadhāti dikṣu tatprajā dadhāti tasmātsarvāsu dikṣu prajāḥ

And, again, as to why he lays down the All-gods’ (bricks). These indeed are those same All-gods who saw this second layer, and who came nigh with that life-sap: it is them he thereby bestows, that is, all these creatures. He lays them down in the range of the Retahsik; for the Retahsik are these two (heaven and earth): within these two (worlds) he thus places creatures; whence there are creatures within these two (worlds). He places (bricks) on every side: he thus places creatures everywhere, whence there are creatures everywhere. He places them alongside of the regional ones: he thus places creatures in the regions (quarters); whence there are creatures in all the (four) quarters.