[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»