Hadith
حَدَّثَنَا عَلِيُّ بْنُ مُحَمَّدٍ، وَأَبُو كُرَيْبٍ وَأَحْمَدُ بْنُ سِنَانٍ قَالُوا حَدَّثَنَا أَبُو أُسَامَةَ، عَنْ عُبَيْدِ اللَّهِ بْنِ عُمَرَ، عَنْ نَافِعٍ، عَنِ ابْنِ عُمَرَ، أَنَّ رَسُولَ اللَّهِ ـ صلى الله عليه وسلم ـ سَهَا فَسَلَّمَ فِي الرَّكْعَتَيْنِ . فَقَالَ لَهُ رَجُلٌ يُقَالُ لَهُ ذُو الْيَدَيْنِ يَا رَسُولَ اللَّهِ أَقَصُرَتِ الصَّلاَةُ أَمْ نَسِيتَ؟ قَالَ " مَا قَصُرَتْ وَمَا نَسِيتُ " . قَالَ إِنَّكَ صَلَّيْتَ رَكْعَتَيْنِ . قَالَ " أَكَمَا يَقُولُ ذُو الْيَدَيْنِ؟ " . قَالُوا نَعَمْ . فَتَقَدَّمَ فَصَلَّى رَكْعَتَيْنِ. ثُمَّ سَلَّمَ ثُمَّ سَجَدَ سَجْدَتَىِ السَّهْوِ .
It was narrated from Ibn ‘Umar that the Messenger of Allah (ﷺ) forgot and said the Taslim after two Rak’ah. A man who was called Dhul-Yadain said to him:‘O Messenger of Allah, has the prayer been shortened or did you forget?’ He said: ‘It has not been shortened and I did not forget.’ He said: ‘But you prayed two Rak’ah.’ He said: ‘Is what Dhul-Yadain says true?’ They said: ‘Yes.’ So he went forward and performed two Rak’ah and said the Salam, then he prostrated twice for prostrations of forgetfulness
Sahih · Al-Albani
Sunan Ibn Majah 1213 ·Book 5, Hadith 411·Also available on sunnah.com·