Srimad Bhagavatam Canto 10, Chapter 51, Text 62

SB 10.51.62

ksatra-dharma-sthito jantun
 nyavadhir mrgayadibhih
samahitas tat tapasa
 jahy agham mad-upasritah
 
Translation: 
 
Because you followed the principles of a ksatriya, you killed living beings while hunting and performing other duties. You must vanquish the sins thus incurred by carefully executing penances while remaining surrendered to Me.
Srimad Bhagavatam Canto 10, Chapter 51, Text 61
Srimad Bhagavatam Canto 10, Chapter 51, Text 63