Sunan Abi Dawud 4073
سنن أبي داود#4073Sahihحَدَّثَنَا مُسَدَّدٌ، حَدَّثَنَا أَبُو مُعَاوِيَةَ، عَنْ هِلاَلِ بْنِ عَامِرٍ، عَنْ أَبِيهِ، قَالَ رَأَيْتُ رَسُولَ اللَّهِ صلى الله عليه وسلم بِمِنًى يَخْطُبُ عَلَى بَغْلَةٍ وَعَلَيْهِ بُرْدٌ أَحْمَرُ وَعَلِيٌّ - رضى الله عنه - أَمَامَهُ يُعَبِّرُ عَنْهُ .
Narrated Amir: I saw the Messenger of Allah (ﷺ) at Mina giving sermon on a mule and wearing a red garment, while Ali was announcing
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:
Al-AlbaniSahih
Muhammad Muhyi Al-Din Abdul HamidSahih
Zubair Ali ZaiSahih
In-book reference: 34:54