Jami` at-Tirmidhi 957
جامع الترمذي#957Sahihحَدَّثَنَا عَبْدُ الْوَارِثِ بْنُ عَبْدِ الصَّمَدِ بْنِ عَبْدِ الْوَارِثِ، حَدَّثَنَا أَبِي، عَنْ أَبِيهِ، عَنْ مُحَمَّدِ بْنِ إِسْحَاقَ، عَنْ أَبِي إِسْحَاقَ، عَنِ الْحَارِثِ، عَنْ عَلِيٍّ، قَالَ سَأَلْتُ رَسُولَ اللَّهِ صلى الله عليه وسلم عَنْ يَوْمِ الْحَجِّ الأَكْبَرِ فَقَالَ " يَوْمُ النَّحْرِ " .
Ali narrated:"I asked the Messenger of Allah about the day of Al-Hajj Al-Akbar and he said: 'They Day of An-Nahr
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:
Ahmad Muhammad ShakirSahih
Al-AlbaniSahih
Zubair Ali ZaiSahih
In-book reference: 9:151