It was not fitting for the people of Medina and for those around them of the wandering Arabs of the desert, to stay behind the Messenger of Allah and prefer their lives to his. That is because neither thirst, nor toil, nor heat, nor hunger befell them on Allah's way, nor do their acts anger the disbelievers, or they receive injury from the enemy, but a good deed is recorded for them. Verily, Allah wastes not the wages of those who do good.