Mukhtasar Muslim (Abridged) 1195 — The caliph should be from Quraysh

Abu Huraira (may Allah be pleased with him) reports that the Messenger of Allah (peace and blessings be upon him) said: In government, all people are subordinate to the Quraysh, and the Muslims are subordinate to the Muslim Quraysh, and the disbelievers are subordinate to the disbelieving Quraysh (that is, they are more deserving of leadership and authority).