Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) narrates: the Prophet (peace and blessings be upon him) said: "The best of the people of the East are Abd al-Qays (i.e. the people of this tribe)."
Al-Bazzar and al-Tabarani recorded it; its chain contains Wahb bin Yahya bin Zimam, whom I do not know. The remaining narrators of this report are thiqat (trustworthy).
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب المناقب / 16579