Vayupurana 2.49.19

Vāyupurāṇa 2.49.19

gaṅgā pādodakaṃ viṣṇoḥ phalgurhyādigadādharaḥ.
svayaṃ hi dravarūpeṇa tasmādgaṅgādhikaṃ viduḥ .. 49.18 ..