Musannaf Ibn Abi Shaybah 34573 — Reports on the virtue of Quraysh

Rabi'ah bin Najid (may Allah have mercy on him) said that Sayyiduna Ali (may Allah be pleased with him) said: "Indeed, Quraysh are the leaders of the Arabs. Their righteous are the leaders of the righteous, and their evil ones are the leaders of the evildoers. Everyone has a right, so give every one who has a right his right."