(33) باب الدَّلِيلِ عَلَى أَنَّ حُبَّ الأَنْصَارِ وَعَلِيٍّ رَضِيَ اللَّهُ عَنْهُمْ مِنَ الإِيمَانِ وَعَلاَمَاتِهِ وَبُغْضَهُمْ مِنْ عَلاَمَاتِ النِّفَاقِ
Zirr reported:
'Ali observed: By Him Who split up the seed and created something living, the Apostle (may peace and blessings be upon him) gave me a promise that no one but a believer would love me, and none but a hypocrite would nurse grudge against me.
Reference: Sahih Muslim 78
In-book reference: Book 1, Hadith 146
USC-MSA web (English) reference(deprecated numbering scheme): Book 1, Hadith 141