Messenger of Allah (S) said: "Indeed the Shaitan comes to one of you in his Salat confusing him until he does now know how much he has prayed. When one of you experiences that then let him perform two prostrations while sitting."  

قَالَ رَسُولُ اللَّهِ ﷺ إِنَّ الشَّيْطَانَ يَأْتِي أَحَدَكُمْ فِي صَلاَتِهِ فَيَلْبِسُ عَلَيْهِ حَتَّى لاَ يَدْرِي كَمْ صَلَّى فَإِذَا وَجَدَ ذَلِكَ أَحَدُكُمْ فَلْيَسْجُدْ سَجْدَتَيْنِ وَهُوَ جَالِسٌ  

Messenger of Allah (S) said: "Indeed the Shaitan comes to one of you in his Salat confusing him until he does now know how much he has prayed. When one of you experiences that then let him perform two prostrations while sitting." (Using translation from Tirmidhī 397)   

أَنَّهُ قَالَ قَالَ رَسُولُ اللهِ ﷺ يَأْتِي أَحَدَكُمُ الشَّيْطَانُ وَهُوَ فِي صَلَاتِهِ فَيَلْبِسُ عَلَيْهِ حَتَّى لَا يَدْرِيَ كَمْ صَلَّى فَإِذَا وَجَدَ ذَلِكَ فَلْيَسْجُدْ سَجْدَتَيْنِ وَهُوَ جَالِسٌ  

[Machine] The Prophet ﷺ said, "When one of you is in prayer, the devil comes to him and distracts him so that he does not know how much he has prayed. So, whoever experiences this, let him perform two prostrations while sitting."  

النَّبِيَّ ﷺ يَأْتِي أَحَدَكُمُ الشَّيْطَانُ وَهُوَ فِي صَلَاتِهِ فَيَلْبِسُ عَلَيْهِ حَتَّى لَا يَدْرِيَ كَمْ صَلَّى فَمَنْ وَجَدَ مِنْ ذَلِكَ شَيْئًا فَلْيَسْجُدْ سَجْدَتَيْنِ وَهُوَ جَالِسٌ  

[Machine] From the Prophet, ﷺ , he said: Indeed, Satan comes to one of you during his prayer, and he does not know whether he has increased or decreased [his prayer]. So, when one of you finds that, let him perform two prostrations.  

عَنِ النَّبِيِّ ﷺ قَالَ إِنَّ الشَّيْطَانَ يَأْتِي أَحَدَكُمْ فِي صَلَاتِهِ فَلَا يَدْرِي أَزَادَ أَمْ نَقَصَ فَإِذَا وَجَدَ أَحَدُكُمْ ذَلِكَ فَلْيَسْجُدْ سَجْدَتَيْنِ  

Messenger of Allah (S) said: "Indeed the Shaitan comes to one of you in his Salat confusing him until he does now know how much he has prayed. When one of you experiences that then let him perform two prostrations while sitting." (Using translation from Tirmidhī 397)   

قَالَ رَسُولُ اللهِ ﷺ يَأْتِي أَحَدَكُمُ الشَّيْطَانُ فَيَلْبِسُ عَلَيْهِ فِي صَلَاتِهِ فَلَا يَدْرِي أَزَادَ أَمْ نَقَصَ فَإِذَا وَجَدَ أَحَدُكُمْ ذَلِكَ فَلْيَسْجُدْ سَجْدَتَيْنِ وَهُوَ جَالِسٌ  

The Messenger of Allah ﷺ said: "When any one of you gets up and prays, the Shaitan comes to him an confuses him until he does not know how many (Rak'ahs) he prayed. If any one of you notices that, let him prostrate twice when he is sitting." (Using translation from Nasāʾī 1252)   

سَمِعْتُ رَسُولَ اللَّهِ ﷺ يَقُولُ «يَأْتِي الشَّيْطَانُ أَحَدَكُمْ وَهُوَ فِي صَلَاتِهِ لِيُلْبِسَ عَلَيْهِ حَتَّى لَا يَدْرِيَ كَمْ صَلَّى فَإِذَا وَجَدَ أَحَدُكُمْ ذَلِكَ 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" .