Sayyiduna Abu Mu'awiyah bin Abd al-Lat al-Azdi (may Allah be pleased with him), who was from Namir al-Azd, said: I heard the Messenger of Allah (peace and blessings be upon him) saying: "Trustworthiness is in al-Azd (tribe), and modesty is in Quraysh."
Hadith Referenceالمعجم الكبير للطبراني / مسند من يعرف بالكنى / 19182