Vayupurana 1.21.p77

Vāyupurāṇa 1.21.p77

aṣṭāśītisahasrāṇāṃ yojanānāṃ pramāṇataḥ .
rathantarantuvijñeyaṃ paramaṃ sūryyamaṇḍalam.
tasmādaṇḍantu vijñeyamabhedyaṃ sūryamaṇḍalam .. 21.70 ..