Śatapatha Brāhmaṇa ("of a hundred paths") 8.2.1.9

8.2.1.9

atha pañcamīṃ diśyāmupadadhāti | ūrdhvā ha sā dikṣā yā sordhvā digasau sa ādityo 'mumevaitadādityamupadadhāti tāmantareṇa dakṣiṇāṃ diśyāmupadadhātyamuṃ tadādityamantareṇa dakṣiṇāṃ diśaṃ dadhāti tasmādeṣo 'ntareṇa dakṣiṇāṃ diśameti

He then lays down the fifth regional (or Âsvinî brick). Now that region is the one above; and that same region above, doubtless, is yonder sun: it is yonder sun he thus places thereon. He places this (brick) within the southern regional one: he thus places yonder sun within the southern region, and therefore he moves within the southern region.