حَدَّثَنَا إِسْحَاقُ بْنُ إِبْرَاهِيمَ سَمِعَ عَبْدَ الْعَزِيزِ بْنَ عَبْدِ الصَّمَدِ حَدَّثَنَا مَنْصُورٌ عَنْ إِبْرَاهِيمَ عَنْ عَلْقَمَةَ عَنْ ابْنِ مَسْعُودٍ رَضِيَ اللَّهُ عَنْهُ أَنَّ نَبِيَّ اللَّهِ صَلَّی اللَّهُ عَلَيْهِ وَسَلَّمَ صَلَّی بِهِمْ صَلَاةَ الظُّهْرِ فَزَادَ أَوْ نَقَصَ مِنْهَا قَالَ مَنْصُورٌ لَا أَدْرِي إِبْرَاهِيمُ وَهِمَ أَمْ عَلْقَمَةُ قَالَ قِيلَ يَا رَسُولَ اللَّهِ أَقَصُرَتْ الصَّلَاةُ أَمْ نَسِيتَ قَالَ وَمَا ذَاکَ قَالُوا صَلَّيْتَ کَذَا وَکَذَا قَالَ فَسَجَدَ بِهِمْ سَجْدَتَيْنِ ثُمَّ قَالَ هَاتَانِ السَّجْدَتَانِ لِمَنْ لَا يَدْرِي زَادَ فِي صَلَاتِهِ أَمْ نَقَصَ فَيَتَحَرَّی الصَّوَابَ فَيُتِمُّ مَا بَقِيَ ثُمَّ يَسْجُدُ سَجْدَتَيْنِ
صحیح بخاری · Hadith 6671
Narrated Ibn Mas`ud: that Allah's Prophet led them in the Zuhr prayer and he offered either more or less rak`at, and it was said to him, "O Allah's Apostle ! Has the prayer been reduced, or have you forgotten?" He asked, "What is that?" They said, "You have prayed so many rak`at." So he performed with them two more prostrations and said, "These two prostrations are to be performed by the person who does not know whether he has prayed more or less (rak`at) in which case he should seek to follow what is right. And then complete the rest (of the prayer) and perform two extra prostrations."
Translated by Dr. Muhammad Muhsin Khan · Reviewed by Islamic University of Madinah · Published March 2020