كتاب السهو
13  
The Book of Forgetfulness (In Prayer)
(25)
Chapter: Estimating (what is most likely the case)
(25)
باب التَّحَرِّي
Sunan an-Nasa'i 1249
It was narrated 'Abdullah bin Ja'far that :
The Messenger of Allah (ﷺ) said: "Whoever has doubt during his prayer, let him prostrate twice after he said the taslim."
أَخْبَرَنَا مُحَمَّدُ بْنُ هَاشِمٍ، أَنْبَأَنَا الْوَلِيدُ، أَنْبَأَنَا ابْنُ جُرَيْجٍ، عَنْ عَبْدِ اللَّهِ بْنِ مُسَافِعٍ، عَنْ عُتْبَةَ بْنِ مُحَمَّدِ بْنِ الْحَارِثِ، عَنْ عَبْدِ اللَّهِ بْنِ جَعْفَرٍ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ ‏ "‏ مَنْ شَكَّ فِي صَلاَتِهِ فَلْيَسْجُدْ سَجْدَتَيْنِ بَعْدَ التَّسْلِيمِ ‏"‏ ‏.‏
Grade: Hasan (Darussalam)
Reference : Sunan an-Nasa'i 1249
In-book reference : Book 13, Hadith 71
English translation : Vol. 2, Book 13, Hadith 1250