Śatapatha Brāhmaṇa ("of a hundred paths") 11.2.7.6

11.2.7.6

iyameva prathamā sāmidhenī agnirdvitīyā vāyustṛtīyāntarikṣaṃ caturthī dyauṣpañcamyādityaḥ ṣaṣṭhī candramāḥ saptamī mano'ṣṭamī vāṅnavamī tapo daśamī brahmaikādaśyetā hi vā idaṃ sarvaṃ samindhata etābhiridaṃ sarvaṃ samiddhaṃ tasmātsāmidhenyo nāma

The first kindling-verse is this (earth), the second the fire, the third the wind, the fourth the air, the fifth the sky, the sixth the sun, the seventh the moon, the eighth the mind, the ninth speech, the tenth fervid devotion, and the eleventh the Brahman; for it is these that kindle all this (universe), and by them all this (universe) is kindled, whence they are called kindling-verses.