سنن أبي داود

Narrated Jabir b. Samurah: I heard the Messenger of Allah (ﷺ) say: This religion will continue to be strong till the time of twelve caliphs. The people then uttered: Allah is more great and uproared. He then silently 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.