Anas ibn Malik reported: The Messenger of Allah, peace and blessings be upon him, said, “There will be division and sectarianism in my nation, and a people will come with beautiful words and evil deeds. They will recite the Quran, but it will not pass beyond their throats. They will leave the religion as an arrow leaves its target, and they will not return to it as the arrow does not return to its bow. They are the worst of the creation....”

Source: Sunan Abī Dāwūd 4765,