Sunan an-Nasa'i 1260
سنن النسائي#1260Da'ifأَخْبَرَنَا الرَّبِيعُ بْنُ سُلَيْمَانَ، قَالَ حَدَّثَنَا شُعَيْبُ بْنُ اللَّيْثِ، قَالَ حَدَّثَنَا اللَّيْثُ، عَنْ مُحَمَّدِ بْنِ عَجْلاَنَ، عَنْ مُحَمَّدِ بْنِ يُوسُفَ، مَوْلَى عُثْمَانَ عَنْ أَبِيهِ، يُوسُفَ أَنَّ مُعَاوِيَةَ، صَلَّى إِمَامَهُمْ فَقَامَ فِي الصَّلاَةِ وَعَلَيْهِ جُلُوسٌ فَسَبَّحَ النَّاسُ فَتَمَّ عَلَى قِيَامِهِ ثُمَّ سَجَدَ سَجْدَتَيْنِ وَهُوَ جَالِسٌ بَعْدَ أَنْ أَتَمَّ الصَّلاَةَ ثُمَّ قَعَدَ عَلَى الْمِنْبَرِ فَقَالَ إِنِّي سَمِعْتُ رَسُولَ اللَّهِ صلى الله عليه وسلم يَقُولُ " مَنْ نَسِيَ شَيْئًا مِنْ صَلاَتِهِ فَلْيَسْجُدْ مِثْلَ هَاتَيْنِ السَّجْدَتَيْنِ " .
It was narrated from Muhammad bin Yusuf, the freed slave of Uthman, from his father Yusuf, that:Mu'awiyah prayed in front of them, and he stood up during the prayer when he should have sat. The people said tasbih, but he remained standing, then he prostrated twice while he was sitting, after he completed the prayer. Then he sat on the Minbar and said: 'I heard the Messenger of Allah (ﷺ) say: 'Whoever forgets something in his prayer, let him prostrate twice like this
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: 13:82