Brahma Purana 69.35

Brahmapurāṇa 69.35

samudrāṇāṃ yathā śreṣṭhaḥ kṣīrodaḥ saritāṃ patiḥ
tathā samastatīrthānāṃ variṣṭhaṃ puruṣottamam //