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. (Using translation from Abū Dāʾūd 4280)
سَمِعْتُ رَسُولَ اللهِ ﷺ يَقُولُ لَا يَزَالُ هَذَا الْأَمْرُ عَزِيزًا إِلَى اثْنَيْ عَشَرَ خَلِيفَةً فَكَبَّرَ النَّاسُ وَضَجُّوا وَقَالَ كَلِمَةً خَفِيَّةً قُلْتُ لِأَبِي يَا أَبَتْ مَا قَالَ؟ قَالَ كُلُّهُمْ مِنْ قُرَيْشٍ