I joined the company of the Prophet ﷺ with my father and I heard him say: This Caliphate will not end until there have been twelve Caliphs among them. The narrator said: Then he (the Holy Prophet) said something that I could not follow. I said to my father: What did he say? He said: He has said: All of them will be from the Quraish.
دَخَلْتُ مَعَ أَبِي عَلَى النَّبِيِّ ﷺ فَسَمِعْتُهُ يَقُولُ إِنَّ هَذَا الأَمْرَ لاَ يَنْقَضِي حَتَّى يَمْضِيَ فِيهِمُ اثْنَا عَشَرَ خَلِيفَةً قَالَ ثُمَّ تَكَلَّمَ بِكَلاَمٍ خَفِيَ عَلَىَّ قَالَ فَقُلْتُ لأَبِي مَا قَالَ قَالَ كُلُّهُمْ مِنْ قُرَيْشٍ