Garudapurana 3.15.21

3.15.21

tato harirjamadagneḥ sutobhūlloke sarve parśurāmaṃ vadanti /
brahmadviṣāṃ kṣatriyāṇāṃ ca vīndra bhūmiṃ niḥ kṣatrāṃ kartukāmo maheśaḥ //

Then Hari became the son of Jamadagni; all in the world call him Rāma Jāmadagnya; / wishing to rid the earth of kṣatriyas, those who hate Brahmā, O King of Birds, he was the great lord.