Srimad Bhagvata Mahapurana: Book 10: Chapter 44: Verses 39-51
Since with a mind full of dismay he ever saw (before his mental eyes) that very Lord armed with a discus while drinking or speaking, walking to and fro or lying asleep, nay, even while breathing, he attained (after death) that very form (so) difficult to attain. Burning all over with rage, the eight younger brothers of Kamsa---Karika, Nyagrodha and others rushed (towards Sri Krsna) in order to get square with their (deceased) brother by avenging his death. Taking up a bludgeon Balarama (Rohini's son), however, made short work of them (even) as they came fully prepared (for an encounter) with such great impetuosity, (just) as a lion (the king of beasts) would kill the cattle. Kettledrums sounded in the heavens; full of delight, Brahma (the creator), Lord Siva and other (special) manifestations of divine glory extolled the Lord covering Him with (showers of) flowers, and celestial women (Apsaras) danced (out of joy). Grieved at the death of their near and dear ones, 0 great king, the widows of the deceased came over to that place, severely and repeatedly beating their heads with tears in their eyes. Embracing their husbands lying (dead) in the arena (which serves as a most glorious bed for heroes that have laid down their lives in an open combat), the women wailed (in the following words) at the pitch of their voice, lamenting their lot and repeatedly shedding tears of grief:-
Thus ends the forty-fourth discourse entitled "Kamsa slain (by the Lord)," in the first half of Book Ten of the great and glorious Bhagavata-Purana, otherwise known as the Paramahamsa-Sarmhita.