Bhagavatapurana 10.59.11

11. His heads cut off, the asura fell lifeless into the water, like a mountain with its crest (wings) cut off by the powerful Indra. [A joyful shower of flowers fell on the head of Krishna when Mura the asura fell]. The asura's seven sons, enraged and impatient at the slaughter of their father and determined to take revenge, sallied forth in full preparation.

12. They were Tamra, Antariksha, Sravana, Vibhavasu, Vasu, Nabhasvan and Aruna the seventh: directed by Naraka and armed with weapons, with the commander of the forces named Peeta at their head, they issued forth (into the battle-field).