Abdullah bin al-Samit (may Allah have mercy on him) narrates from Sayyiduna Abu Dharr (may Allah be pleased with him), who said: The Messenger of Allah (peace and blessings be upon him) said: "After me there will be people from my Ummah who will recite the Qur'an, but it will not go beyond their throats. They will exit from the religion just as an arrow exits from the game, and then they will not return to it. They will be the worst of creation." Sulayman said: My strongest assumption is that he also said: "Their mark will be shaving the head." Ibn al-Samit said: Then I met Rafi' bin Amr, the brother of al-Hakam bin Amr al-Ghifari, and I said to him: I heard a hadith from Abu Dharr in which he says such and such - and I narrated this hadith to him. He said: "Why does this amaze you? I too heard it from the Messenger of Allah (peace and blessings be upon him)."
Hadith Referenceالمعجم الكبير للطبراني / باب الراء / 4446