SB 10.76.32
sarathir uvaca
dharmam vijanatayusman
krtam etan maya vibho
sutah krcchra-gatam raksed
rathinam sarathim rathi
Translation:
The driver replied: O long-lived one, I have done this knowing full well my prescribed duty. O my Lord, the chariot driver must protect the master of the chariot when he is in danger, and the master must also protect his driver.