Devibhagavatapurana 4.17.23

4.17.23

tau hi kṛṣṇārjunau vīrau bhūbhāraharaṇāya ca |
jātau tau bharataśreṣṭha bhṛgoḥ śāpavaśādiha ||

O king! Thus I have described to you, in detail, all the wonderful accounts regarding Nara Nârâyana.
O Superior in the descendants of Bharata! These two Nara and Nârâyana afterwards incarnated themselves, due to Bhrigu’s curse as the two great heroes Arjuna and Krisna, to relieve the burden of the earth.