9:101Among the Desert-Arabs around you there are some hypocrites, and among the inhabitants of Medina too. They have become adamant in hypocrisy. You do not know them, but We know them. We will punish them twice; then they will be returned to a severe torment.

9:120It is not for the inhabitants of Medina and the Desert-Arabs around them to stay behind the Messenger of God, nor to prefer themselves to him. That is because they never suffer any thirst, nor fatigue, nor hunger in the cause of God, nor do they take one step that enrages the disbelievers, nor do they gain anything from an enemy, but it is recorded to their credit as a righteous deed. God does not waste the reward of the righteous.