Naradapurana 1.116.13

Nāradapurāṇa 1.116.13

tato ghaṭasahasraṃ tu deyaṃ gaṅgāvrate tvidam /
bhaktyā kṛtaṃ saptakulaṃ nayetsvargamasaṃśayaḥ //