Śatapatha Brāhmaṇa ("of a hundred paths") 6.5.4.6

6.5.4.6

varūtrīṣṭvā devīḥ | viśvadevyāvatīḥ pṛthivyāḥ sadhastha aṅgirasvacrapayantūkha iti varūtrīrhaitāmagre devīrviśvadevyāvatīḥ pṛthivyāḥ sadhasthe 'ṅgirasvacrapayāṃ cakrustābhirevaināmetacrapayati tāni ha tānyahorātrāṇyevāhorātrāṇi vai varūtrayo 'horātrairhīdaṃ sarvaṃ vṛtamahorātrairevaināmetacrapayati

'May the divine protectresses, dear to all the gods, heat thee, O fire-pan, Aṅgiras-like, in the lap of the earth!' for of old the divine protectresses, dear to all the gods, indeed, like Aṅgiras, heated it in the lap of the earth; and by them he now heats it. But, surely, these are the days and nights,--the protectresses are indeed the days and nights; for by days and nights everything is covered here: by means of the days and nights he thus heats it.