Srimad Bhagavatam Canto 10, Chapter 36, Text 25

 SB 10.36.25

mahamatra tvaya bhadra
 ranga-dvary upaniyatam
dvipah kuvalayapido
 jahi tena mamahitau
 
Translation: 
 
You, elephant-keeper, my good man, should position the elephant Kuvalayapida at the entrance to the wrestling arena and have him kill my two enemies.
Srimad Bhagavatam Canto 10, Chapter 36, Text 24
Srimad Bhagavatam Canto 10, Chapter 36, Text 26