Sunan an-Nasa'i 872
سنن النسائي#872Sahihأَخْبَرَنَا مُحَمَّدُ بْنُ عَبْدِ اللَّهِ بْنِ الْمُبَارَكِ، قَالَ حَدَّثَنِي أَبُو أُسَامَةَ، قَالَ حَدَّثَنِي الْوَلِيدُ بْنُ كَثِيرٍ، عَنْ سَعِيدِ بْنِ أَبِي سَعِيدٍ، عَنْ أَبِيهِ، عَنْ أَبِي هُرَيْرَةَ، قَالَ صَلَّى رَسُولُ اللَّهِ صلى الله عليه وسلم يَوْمًا ثُمَّ انْصَرَفَ فَقَالَ " يَا فُلاَنُ أَلاَ تُحَسِّنُ صَلاَتَكَ أَلاَ يَنْظُرُ الْمُصَلِّي كَيْفَ يُصَلِّي لِنَفْسِهِ إِنِّي أُبْصِرُ مِنْ وَرَائِي كَمَا أُبْصِرُ بَيْنَ يَدَىَّ " .
It was narrated that Abu Hurairah said:"The Messenger of Allah (ﷺ) prayed one day then left and said: '0 so-and-so, why don't you improve your prayer? Shouldn't the one who is praying reflection how he prays it for himself? I can see behind me just as I can see in front of me
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: 10:96