Sahih Bukhari
Virtues and Merits of the Prophet (pbuh) and his Companions
Volume: 004 / Book Number: 056 / Hadith Number: 707
Narrated Abu Huraira:
Allah's Apostle said, "The tribe of Quraish, the Ansar, the (people of the tribe of) Julhaina, Muzaina, Aslam, Ashja', and Ghifar are my disciples and have no protectors except Allah and His Apostle."