Twelve rulers of Muslims

جَابِرَ بْنَ سَمُرَةَ، قَالَ سَمِعْتُ النَّبِيَّ صَلَّى اللّٰهُ عَلَيْهِ وَسَلَّم يَقُولُ: يَكُونُ اثْنَا عَشَرَ أَمِيرًا ـ فَقَالَ كَلِمَةً لَمْ أَسْمَعْهَا فَقَالَ أَبِي إِنَّهُ قَالَ ـ كُلُّهُمْ مِنْ قُرَيْشٍ.‏

It is narrated by Jabir^ra bin Samura, “I heard the Prophet^sa saying, ‘There will be twelve rulers.’ He then said a sentence which I did not hear. My father said that he had said, ‘All of them will be from Quraish.’”

(Sahih al-Bukhari, Kitab al-ahkam, Hadith 7222, 7223)