Sunan an-Nasa'i 5019
سنن النسائي#5019Sahihأَخْبَرَنَا إِسْمَعِيلُ بْنُ مَسْعُودٍ قَالَ حَدَّثَنَا خَالِدٌ يَعْنِي ابْنَ الْحَارِثِ عَنْ شُعْبَةَ عَنْ عَبْدِ اللَّهِ بْنِ عَبْدِ اللَّهِ بْنِ جَبْرٍ عَنْ أَنَسٍ عَنْ النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَالَ حُبُّ الْأَنْصَارِ آيَةُ الْإِيمَانِ وَبُغْضُ الْأَنْصَارِ آيَةُ النِّفَاقِ
It was narrated from Anas that:The Prophet [SAW] said: "Love for Ansar is a sign of Faith, and hatred for Ansar is a sign of hypocrisy
Scholarly Authentication
The label above is the grade most of these scholars gave — one dissenting opinion no longer speaks for all of them. If any scholar calls a narration fabricated, that verdict is shown instead, whatever the others say. Each scholar's own wording:
Abu GhuddahSahih
Al-AlbaniSahih
Zubair Ali ZaiSahih - Agreed Upon
In-book reference: 47:35