It was not proper for the people of Madînah and (for) the Arabs of the desert (who live) around them to have stayed behind the Messenger of Allâh (at the time of expedition to Tabûk) nor (was it proper for them) to have preferred their own lives to his. That is because they suffer no thirst, nor fatigue, nor hunger in Allâh's way nor do they make a journey which enrages the disbelievers, nor do they gain an advantage over an enemy, but a righteous deed is credited to their account (in the record of their deeds) because of it. Verily, Allâh suffers not the reward of the doers of good to be lost.