Sayyiduna Ali (may Allah be pleased with him) says: If I narrate to you any hadith from the Messenger of Allah (peace and blessings be upon him), then for me, falling from the sky to the earth is more beloved than attributing a lie to him (peace and blessings be upon him). I heard him (peace and blessings be upon him) saying: "In the last times, there will appear people who will be young in age and foolish in mind. They will speak words that are the best among all creation. Their faith will not go below their throats. They will go out of the religion just as an arrow passes through its prey. So wherever you find them, kill them, for the one who kills them will have a reward."