Shatapatha Brahmana 6.7.1.12

6.7.1.12

athainamāsandyā bibharti | iyaṃ vā āsandyasyāṃ hīdaṃ sarvamāsannamiyaṃ vā etaṃ yantumarhatyanayaitaṃ devā abibharuranayaivainametadbibharti

Now, he carries that (fire in the pan) on a seat;--the seat (âsandî) doubtless is this earth, for on her everything here is settled (âsanna); and she indeed is able to sustain him (Agni): it was thereby that the gods carried him, and thereby he now carries him.