And the Noble Prophet (peace and blessings be upon him) said: In the matter of this religion, all people are subordinate to the Quraysh; the common Muslims are subordinate to the Qurayshi Muslims, and the common disbelievers are subordinate to the Qurayshi disbelievers.
Hadith Referenceمسند احمد / مسند المكثرين من الصحابة / 8243