Śatapatha Brāhmaṇa ("of a hundred paths") 9.2.3.26

9.2.3.26

pṛthivyā aham | udantarikṣamāruhamantarikṣāddivamāruhamiti gārhapatyāddhyāgnīdhrīyamāgacantyāgnīdhrīyādāhavanīyaṃ divo nākasya pṛṣṭhātsvarjyotiragāmahamiti divo nākasya pṛṣṭhātsvargaṃ lokamagāmahamityetat

'From the earth have I ascended the air; from the air have I ascended the sky;'--for from the Gârhapatya they go to the Âgnîdhrîya, and from the Âgnîdhrîya to the Âhavanîya;--'from the sky, the back of the firmament, have I gone to heaven, to the light;'--that is, 'from the sky, the back of the firmament, have I gone to the heavenly world.'