Abu Dawud
The Promised Deliverer
Book Number: 031 / Hadith Number: 4267
Narated By Jabir ibn Samurah : I heard the Apostle of Allah (pbuh) say: This religion will continue to be strong till the time of the twelve caliphs. The people then uttered: Allah is most great, and up-roared. He then silently spoke a word which I could not understand. So I said to my father: What did he say, father? He said: All of them will belong to Quraish.