"God promises a reward

 without measure in the next world to those who are patient with tribulations in this one. This does not mean that we should adhere to a passive quietism, refraining from attempts to redress wrongs or oppose injustice; rather, it means we must strive for an inner world of submission and resignation even as we struggle to restore balance and restitution in the outer world. In this lies a subtle distinction lost on too many."

-from Shaykh Hamza Yusuf's introduction to The Prayer of the Oppressed of Imam Muhammad b. Nasir al-Dar'i, pg. 9.