Bhagavatapurana 10.36.23

10.36.23

rāma-kṛṣṇau tato mahyaṃ mṛtyuḥ kila nidarśitaḥ /
bhavadbhyām iha samprāptau hanyetāṃ malla-līlayā //

22. & 23. "O my warriors, Chanura and Mushtika! Listen to this; at Nanda's Vraja indeed now live the sons of Vasudeva, Rama and Krishna. That at their hands I should meet my death is decreed.

24. "You should both kill the two in a wrestling match, when brought here. Let galleries be constructed of various patterns suitable to the arena of wrestlers and let all people, both of the city and the country, witness (enjoy) the free fighting.