Jami` at-Tirmidhi 3711
جامع الترمذي#3711Sahihحَدَّثَنَا سُفْيَانُ بْنُ وَكِيعٍ، قَالَ حَدَّثَنَا أَبِي وَيَحْيَى بْنُ سَعِيدٍ، عَنْ إِسْمَاعِيلَ بْنِ أَبِي خَالِدٍ، عَنْ قَيْسِ بْنِ أَبِي حَازِمٍ، قَالَ حَدَّثَنِي أَبُو سَهْلَةَ، قَالَ قَالَ لِي عُثْمَانُ يَوْمَ الدَّارِ إِنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَدْ عَهِدَ إِلَىَّ عَهْدًا فَأَنَا صَابِرٌ عَلَيْهِ . قَالَ أَبُو عِيسَى هَذَا حَدِيثٌ حَسَنٌ صَحِيحٌ لاَ نَعْرِفُهُ إِلاَّ مِنْ حَدِيثِ إِسْمَاعِيلَ بْنِ أَبِي خَالِدٍ .
Narrated Abu Sahlah:"The day of the house (when he was besieged), 'Uthman said: 'Indeed the Messenger of Allah (ﷺ) took a covenant from me, and I will abide by it
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:
In-book reference: 49:107