I heard the Prophet ﷺ saying, "There will be twelve Muslim rulers (who will rule all the Islamic world)." He then said a sentence which I did not hear. My father said, "All of them (those rulers) will be from Quraish."  

سَمِعْتُ النَّبِيَّ ﷺ يَقُولُ يَكُونُ اثْنَا عَشَرَ أَمِيرًا فَقَالَ كَلِمَةً لَمْ أَسْمَعْهَا فَقَالَ أَبِي إِنَّهُ قَالَ كُلُّهُمْ مِنْ قُرَيْشٍ