Bhagavatapurana 2.2.24

2.2.24

vaiśvānaraṃ yāti vihāyasā gataḥ suṣumṇayā brahmapathena śociṣā /
vidhūtakalko 'tha harerudastāt prayāti cakraṃ nṛpa śaiśumāram //

24. Passing through the bright Sushumna (tubular organ), through the sky and (there too) through the path of Brahmaloka, he reaches Vaisvanara, the god of Fire; he then shakes off all impurity (sin), O king, and (then) proceeds to the Saimsumara region which is placed on high (above all) and where Hari is the presiding deity.