Sahih al-Bukhari 3734
صحيح البخاري#3734Sahihحَدَّثَنِي الْحَسَنُ بْنُ مُحَمَّدٍ، حَدَّثَنَا أَبُو عَبَّادٍ، يَحْيَى بْنُ عَبَّادٍ حَدَّثَنَا الْمَاجِشُونُ، أَخْبَرَنَا عَبْدُ اللَّهِ بْنُ دِينَارٍ، قَالَ نَظَرَ ابْنُ عُمَرَ يَوْمًا وَهْوَ فِي الْمَسْجِدِ إِلَى رَجُلٍ يَسْحَبُ ثِيَابَهُ فِي نَاحِيَةٍ مِنَ الْمَسْجِدِ فَقَالَ انْظُرْ مَنْ هَذَا لَيْتَ هَذَا عِنْدِي. قَالَ لَهُ إِنْسَانٌ أَمَا تَعْرِفُ هَذَا يَا أَبَا عَبْدِ الرَّحْمَنِ هَذَا مُحَمَّدُ بْنُ أُسَامَةَ، قَالَ فَطَأْطَأَ ابْنُ عُمَرَ رَأْسَهُ، وَنَقَرَ بِيَدَيْهِ فِي الأَرْضِ، ثُمَّ قَالَ لَوْ رَآهُ رَسُولُ اللَّهِ صلى الله عليه وسلم لأَحَبَّهُ.
Narrated `Abdullah bin Dinar:One day Ibn `Umar, while in the Mosque, looked at a man who was dragging his clothes while walking in one of the corners of the Mosque He said, "See who is that. I wish he was near to me." Somebody then said (to Ibn `Umar), "Don't you know him, O Abu `Abdur-Rahman? He is Muhammad bin Usama." On that Ibn `Umar bowed his head and dug the earth with his hands and then, said, "If Allah's Messenger (ﷺ) saw him, he would have loved him
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:
Every narration in Sahih al-Bukhari is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 62:81