Simak bin Harb narrated from Jabir bin Samurah who said " The Messenger of Allah(s.a.w) said: “There will be twelve Amir after me."' He said: "Then he said something that I did not understand. So I asked the one who was next to me, who said that he(s.a.w) had said: “All of them are from Quraish””"
SahihSahihHasan SahihBook 33 · Hadith 66