[Machine] Narrated Abu Sa'id and raised it to the Prophet ﷺ that he said, "If a man doubts in his prayer whether he has increased or decreased (the number of raka'at), he should perform two prostrations while sitting."
عَنْ أَبِي سَعِيدٍ وَرَفَعَهُ إِلَى النَّبِيِّ ﷺ أَنَّهُ قَالَ إِذَا أَوْهَمَ الرَّجُلُ فِي صَلَاتِهِ فَلَمْ يَدْرِ أَزَادَ أَمْ نَقَصَ فَلْيَسْجُدْ سَجْدَتَيْنِ وَهُوَ جَالِسٌ
[Machine] On the authority of Abu Sa'id Al-Khudri, he reported from the Prophet ﷺ who said, "If a person becomes uncertain during their prayer as to whether they have added something or omitted something, then they should perform two prostrations (Sajdatayn) while still seated."
عَنْ أَبِي سَعِيدٍ الْخُدْرِيِّ يَرْفَعُهُ إِلَى النَّبِيِّ ﷺ قَالَ «إِذَا وَهِمَ الرَّجُلُ فِي صَلَاتِهِ فَلَمْ يَدْرِ أَزَادَ أَمْ نَقَصَ فَلْيَسْجُدْ سَجْدَتَيْنِ وَهُوَ جَالِسٌ»
"إذا سَهَا أحدُكم في صلاتِه فلا يدْرى أزَادَ أمْ نقصَ؟ فليسْجدْ سجْدتين وهُوَ جَالِسٌ، ثُمَّ يُسَلِّم" .