Brahma Purana 43.14

Brahmapurāṇa 43.14

mārkaṇḍeyaṃ ca kṛṣṇaṃ ca dṛṣṭvā rāmaṃ ca bho dvijāḥ
sāgare cendradyumnākhye snātvā mokṣaṃ labhed dhruvam //