The Book of Faith
1/33. Chapter:
Evidence that love of the Ansar and Ali (r.a.) is a part of faith and a sign thereof; Hating them is a sign of hypocrisy
Sahih Muslim
حَدَّثَنَا مُحَمَّدُ بْنُ الْمُثَنَّى، حَدَّثَنَا عَبْدُ الرَّحْمَنِ بْنُ مَهْدِيٍّ، عَنْ شُعْبَةَ، عَنْ عَبْدِ اللَّهِ بْنِ عَبْدِ اللَّهِ بْنِ جَبْرٍ، قَالَ سَمِعْتُ أَنَسًا، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " آيَةُ الْمُنَافِقِ بُغْضُ الأَنْصَارِ وَآيَةُ الْمُؤْمِنِ حُبُّ الأَنْصَارِ " .
It is reported on the authority of Anas that the Messenger of Allah (may peace and blessings Be upon him) observed: The sign of a hypocrite is the hatred against the Ansar and the sign of a believer is the love for the Ansar.
Reference : Sahih Muslim 74aIn-book reference : Book 1, Hadith 141USC-MSA web (English) reference : Book 1, Hadith 136