Ubaydullah ibn Sa'id, Abu Bakr ibn Nafi', and Abd ibn Humayd narrated to us, they said: Abu 'Amir al-'Aqadi narrated to us, Aflah ibn Sa'id narrated to us, Abdullah ibn Rafi', the freed slave of Umm Salama, narrated to me, he said: I heard Abu Hurayra say: I heard the Messenger of Allah, peace and blessings be upon him, say: "If a long period passes over you, you will soon see a people who go out in the morning in the wrath of Allah and return in the evening in His curse, in their hands something like the tails of cows."