Bhagavatapurana 9.7.8

9.7.8

so 'napatyo viṣaṇṇātmā nāradasyopadeśataḥ /
varuṇaṃ śaraṇaṃ yātaḥ putro me jāyatāṃ prabho //

8. & 9. Harischandra was childless and cheerless and as advised by Narada he sought Varuna for protection, and said, "O Lord, may a son be born to me! If he be a warrior, O great king, I shall worship thee sacrificing him". Varuna said, "Be it so"; and through his grace was born his son Rohita.