No cause had the people of Medina and the Arabs of the desert around them, to abandon God's Apostle, or to prefer their own lives to his; because neither thirst, nor the labour nor hunger, could come upon them when on path of God; neither do they step a step which may anger the unbelievers, neither do they receive from the enemy any damage, but it is written down to them as a good work. Verily, God suffereth not the reward of the righteous to perish.