It was narrated that Ali said: "I heard the Messenger of Allah (صلی اللہ علیہ وسلم) say: At the end of time there will appear young people with foolish minds. Their faith will not pass through their throats, and they will go out of Islam as an arrow goes through the target. If you meet them, then kill them, for killing them will bring reward to the one who killed them on the Day of Resurrection.