Vaikhanasasmartasutra 1.2.7

1.2.7

dhātādipūrvaṃ savitre kāṇḍarṣaye sadasaspatimā devo yātvabhīvṛtaṃ sa ghā no vi janāñchyāvā vi suparṇo bhagaṃ dhiyamiti sāvitravratasūktamagne vāyavindrāditya vratānāmiti sāvitravratabandhaṃ pañcabhirvyāhṛtyantaṃ juhotyagnaye samidhamiti dve agnaye samidhāviti catvāryagnaye samidha iti sapta pālāśāṅkurāṇi ghṛtāktāni juhoti sūrya eṣa te putra ityādityaṃ darśayatyaṣṭābhiḥ samidbhirhomakarmaṇi śiṣyaṃ yojayedyathā heti dakṣiṇādipradakṣiṇaṃ vediṃ parimṛjya pūrvavatparistṛṇāti vyāhṛtīreṣā te medhāṃ ma indro dadātvapsarāsvā māṃ medhetyaṣṭau juhoti yathā heti tathā parimṛjya prāsāvīrityantaiścaturbhiḥ pravāhaṇaṃ kṛtvā bhūtiḥ smeti bhasmālipyāpohi ṣṭheti prokṣya yatte agne tejastenetyagnimudvayāmityādityaṃ copatiṣṭheta nityaṃ sāyaṃprātarevaṃ juhuyādyato brahmadattamidamijyamagnihotrametanmūlāstadagnaya iti brahmavādino vadanti \7\