Vishnupurana 5.20.20

5.20.20

nyāyato 'nyāyato vāpi bhavadbhyāṃ tau mamāhitau
hantavyau tadvadhād rājyaṃ sāmānyaṃ vo bhaviṣyati //

When Kansa knew that Akrúra had returned, and heard that the bow had been broken, he thus said to Cháńúra and Musht́ika, his boxers: "Two youths, cowherd boys, have arrived; you must kill them both, in a trial of strength, in my presence; for they practise against my life. I shall be well pleased if you kill them in the match, and will give you whatever you wish; not else. These two foes of mine must be killed by you fairly or unfairly. The kingdom shall be ours in common, when they have perished." Having given them these orders, he sent next for his elephant driver, and desired him to station his great elephant Kuvalayápíd́a, who was as vast as a cloud charged with rain, near the gate of the arena, and drive him upon the two boys when they should attempt to enter. When Kansa had issued these commands, and ascertained that the platforms were all ready for the spectators, he awaited the rising of the sun, unconscious of impending death.