Saurapurana 1.7

1.7

kṛṣṇadvaipāyanātsākṣātpūrvaṃ hi viditaṃ tvayā
tvatto nāsti paro vaktā purāṇānāṃ mahātapaḥ

For it was learned directly by you of old from Kṛṣṇa Dvaipāyana; / there is no better teller of the Purāṇas than you, O man of great ascetic penance!