Sayyiduna Abu Hurayrah (may Allah be pleased with him) narrates: the Prophet (peace and blessings be upon him) said: "The people of the tribe of Azd are good people; their mouths are pure, their oaths are true and their hearts are clean and pure."
Ahmad recorded it, and its chain is hasan (good).
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب المناقب / 16583