Srimad-Bhagavatam: Canto 1 - Chapter 1 - Verse 22

Sanskrit:

अथर्वाङ्गिरसामासीत्सुमन्तुर्दारुणो मुनि: ।इतिहासपुराणानां पिता मे रोमहर्षण: ॥ २२ ॥

ITRANS:

atharvāṅgirasām āsītsumantur dāruṇo muniḥitihāsa-purāṇānāṁpitā me romaharṣaṇaḥ

Translation:

The Sumantu Muni Aṅgirā, who was very devotedly engaged, was entrusted with the Atharva Veda. And my father, Romaharṣaṇa, was entrusted with the Purāṇas and historical records.

Purport:

In the śruti-mantras also it is stated that Aṅgirā Muni, who strictly followed the rigid principles of the Atharva Veda, was the leader of the followers of the Atharva Veda.