Abu Sa'id al-Khudri reported God’s Messenger as saying, “My people will be in two sections from among whom a seceding party will go out, and those who are nearest to the truth will undertake the killing of them.”
‘Ali told that he heard God’s Messenger say, “In the last time people will come forth, young and foolish, speaking the finest words men speak, but their faith will not pass their throats. They will come out from the religion as an arrow does from the animal it is aimed at. Wherever you meet them kill them, for a reward for killing them will be given on the day of resurrection to those who kill them.”
Jarir reported God’s Messenger as saying at the Farewell Pilgrimage, “You must never revert to infidelity after my death and cut off one another’s heads.”