Sahih al-Bukhari 724
صحيح البخاري#724Sahihحَدَّثَنَا مُعَاذُ بْنُ أَسَدٍ، قَالَ أَخْبَرَنَا الْفَضْلُ بْنُ مُوسَى، قَالَ أَخْبَرَنَا سَعِيدُ بْنُ عُبَيْدٍ الطَّائِيُّ، عَنْ بُشَيْرِ بْنِ يَسَارٍ الأَنْصَارِيِّ، عَنْ أَنَسِ بْنِ مَالِكٍ، أَنَّهُ قَدِمَ الْمَدِينَةَ فَقِيلَ لَهُ مَا أَنْكَرْتَ مِنَّا مُنْذُ يَوْمِ عَهِدْتَ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ مَا أَنْكَرْتُ شَيْئًا إِلاَّ أَنَّكُمْ لاَ تُقِيمُونَ الصُّفُوفَ. وَقَالَ عُقْبَةُ بْنُ عُبَيْدٍ عَنْ بُشَيْرِ بْنِ يَسَارٍ قَدِمَ عَلَيْنَا أَنَسُ بْنُ مَالِكٍ الْمَدِينَةَ بِهَذَا.
Narrated Anas bin Malik:I arrived at Medina and was asked whether I found any change since the days of Allah's Messenger (ﷺ). I said, "I have not found any change except that you do not stand in alignment in your prayers
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: 10:118