It is narrated from Hazrat Abu Saeed (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) mentioned a people who will be in your Ummah and will emerge among the people as a separate sect; their distinguishing mark will be shaving their heads. These people will be the worst of creation. One of the two groups—whichever is closer to the truth—will kill them. Then the Prophet (peace and blessings be upon him) gave an example of them, saying: Just as a man shoots an arrow, then looks at its tip and finds nothing there, then looks at its blade and finds nothing there, then looks at its shaft and finds nothing there. Hazrat Abu Saeed (may Allah be pleased with him) said: O people of Iraq! It is you who killed these people.