Sayyiduna Abdullah bin al-Sa'ib (may Allah be pleased with him) reports that the Prophet (peace and blessings be upon him) said: "Give precedence to Quraysh, and do not try to go ahead of them. Learn from Quraysh, and do not try to teach them. Were it not for the fear that Quraysh would become too self-satisfied, I would have told them what reward there is with Allah Almighty for the best of them."
Al-Tabarani recorded it; its chain contains a narrator, Abu Ma'shar, whose hadith is hasan (good), and the remaining narrators of this report are the narrators of the Sahih.
It is narrated from Sayyiduna Abdullah bin al-Harith bin Jaz' al-Zubaydi (may Allah be pleased with him) that he said: The Messenger of Allah (peace and blessings be upon him) said: "Knowledge is in Quraysh, and trustworthiness is in the tribe of al-Azd."
Imam al-Tabarani (may Allah have mercy on him) recorded it in al-Mu'jam al-Awsat and al-Mu'jam al-Kabir, and its chain is hasan (good).
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب المناقب / 16451