(33) باب الدَّلِيلِ عَلَى أَنَّ حُبَّ الأَنْصَارِ وَعَلِيٍّ رَضِيَ اللَّهُ عَنْهُمْ مِنَ الإِيمَانِ وَعَلاَمَاتِهِ وَبُغْضَهُمْ مِنْ عَلاَمَاتِ النِّفَاقِ
It is narrated on the authority of Abu Sa'id Khudri that the Messenger of Allah observed:
The person who believes in Allah and the Last Day never nurses a grudge against the Ansar.
Reference: Sahih Muslim 77
In-book reference: Book 1, Hadith 145
USC-MSA web (English) reference(deprecated numbering scheme): Book 1, Hadith 140