‘Ali (may Allah be pleased with him) said: I heard the Prophet (SAW) say: In the end times people of young age will come around, foolish dreamers, speaking the best words on earth, who will pierce through and out of Islam like an arrow pierces through and out of its target; their belief will not go past their throats. So wherever you come across them, kill them, for indeed killing them will be a reward, on resurrection day, for those who kill them.