Give a person his rightful due even though he may be your enemy.
He who turns away from My rememberance shall live in anguish and come before Us blind on the Day of Resurrection. "Lord," he will say, "why have you brought me blind before you when in my lifetime I was blessed with sight?" God will answer: "Because Our signs came unto you and you forgot them. In like manner this Day you are yourself forgotten." And thus do We reward the transgressor who denies the revelations of his Lord. But the punishment of the world to come is more terrible and more lasting.
(20: 124-127)