حَدَّثَنَا مُحَمَّدُ بْنُ بَشَّارٍ، حَدَّثَنَا مُحَمَّدُ بْنُ جَعْفَرٍ، حَدَّثَنَا شُعْبَةُ، عَنْ مَنْصُورٍ، قَالَ شُعْبَةُ كَتَبَ إِلَىَّ وَقَرَأْتُهُ عَلَيْهِ قَالَ أَخْبَرَنِي إِبْرَاهِيمُ عَنْ عَلْقَمَةَ عَنْ عَبْدِ اللَّهِ قَالَ صَلَّى رَسُولُ اللَّهِ ـ صلى الله عليه وسلم ـ صَلاَةً لاَ يَدْرِي أَزَادَ أَوْ نَقَصَ . فَسَأَلَ فَحَدَّثْنَاهُ فَثَنَى رِجْلَهُ وَاسْتَقْبَلَ الْقِبْلَةَ وَسَجَدَ سَجْدَتَيْنِ ثُمَّ سَلَّمَ ثُمَّ أَقْبَلَ عَلَيْنَا بِوَجْهِهِ فَقَالَ " لَوْ حَدَثَ فِي الصَّلاَةِ شَىْءٌ لأَنْبَأْتُكُمُوهُ وَإِنَّمَا أَنَا بَشَرٌ أَنْسَى كَمَا تَنْسَوْنَ فَإِذَا نَسِيتُ فَذَكِّرُونِي وَأَيُّكُمْ مَا شَكَّ فِي الصَّلاَةِ فَلْيَتَحَرَّ أَقْرَبَ ذَلِكَ مِنَ الصَّوَابِ فَيُتِمَّ عَلَيْهِ وَيُسَلِّمَ وَيَسْجُدَ سَجْدَتَيْنِ " .
It wasnarrated that ‘Abdullah said: “The Messenger of Allah (PBUH)offered prayer, and I am not sure whether he did something extra oromitted something. He asked, and we told him, so he turned to face theQiblah and prostrated twice, then he said the Salam. Then he turnedto face us and said: ‘If any new command has been revealedconcerning the prayer, I would certainly have told you. But I am onlyhuman and I forget and you forget. If I forget, then remind me. Andif anyone of you is uncertain about the prayer, let him do what isclosest to what is correct, then complete the prayer, say the Salamand prostrate twice.” Translation Not Available
Book Ref: Sunan Ibn Majah Book 5 Hadith 1211
Web Ref: Sunan Ibn Majah Vol 1 Book 5 Hadith 1211