Hazrat Yasir bin Amr narrates that I asked Hazrat Sahl bin Hunaif: Did you ever hear the Prophet (peace and blessings be upon him) mention the Khawarij? He replied: I heard the Prophet (peace and blessings be upon him) while he pointed with his hand towards the east and said: From here a group will emerge who will recite the Qur'an with their tongues, but the Qur'an will not go beyond their throats. They will leave the religion just as an arrow passes through its prey.