Musannaf Ibn Abi Shaybah 40691 — Reports on the Khawarij

It is narrated from Sayyiduna Abdullah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "At the end of time a people will appear who are young in age and blind of intellect. When they speak, they will say the finest of what people say. They will recite the Qur'an with their tongues, but the Qur'an will not go down beyond their throats. They will pass out of the religion of Islam as swiftly as an arrow passes through its target. Whoever encounters them, let him kill them, for killing them earns a great reward with Allah."