It was not for the people of Medinah, and those around about them of the Arabs of the desert, to stay behind the Apostle of God and not to prefer their souls to his: that is because neither thirst, nor toil, nor heat, nor hunger befell them on God's way. Nor do they stop to anger the misbelievers, nor do they get any (harm) from the enemy without a good work being written down to them; verily, God wastes not the hire of those who do well.