Jami` at-Tirmidhi 2461
جامع الترمذي#2461Sahihحَدَّثَنَا عَبْدُ بْنُ حُمَيْدٍ، أَخْبَرَنَا عَبْدُ الرَّزَّاقِ، عَنْ مَعْمَرٍ، عَنِ الزُّهْرِيِّ، عَنْ عُبَيْدِ اللَّهِ بْنِ عَبْدِ اللَّهِ بْنِ أَبِي ثَوْرٍ، قَالَ سَمِعْتُ ابْنَ عَبَّاسٍ، يَقُولُ أَخْبَرَنِي عُمَرُ بْنُ الْخَطَّابِ، قَالَ دَخَلْتُ عَلَى رَسُولِ اللَّهِ صلى الله عليه وسلم فَإِذَا هُوَ مُتَّكِئٌ عَلَى رَمْلِ حَصِيرٍ فَرَأَيْتُ أَثَرَهُ فِي جَنْبِهِ . قَالَ أَبُو عِيسَى هَذَا حَدِيثٌ حَسَنٌ صَحِيحٌ وَفِي الْحَدِيثِ قِصَّةٌ طَوِيلَةٌ .
Ibn 'Abbas narrated:"'Umar bin Al-Khattab informed me, saying: 'I entered upon the Messenger of Allah (s.a.w) and saw him reclining upon a mat woven from fibers, and I could see the impressions it left upon his side
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: 37:47