Sahih Bukhari
Sahih Bukhari Volume 005, Book 058, Hadith Number 128.
Hadith Section/Book: Sahih Bukhari Sahih Bukhari Book 58. Merits of the Helpers in Madina (Ansaar)
Narated By Anas bin Malik : The Prophet said, "The sign of Belief is to love the Ansar, and the sign of hypocrisy is to hate the Ansar."