"If one of you is not sure about his prayer, let him estimate what he thinks is most likely to be correct and complete the prayer on that basis, then let him prostrate twice." (Using translation from Nasāʾī 1240)   

عَنْ عَبْدِ اللهِ يَرْفَعُهُ إِلَى النَّبِيِّ ﷺ قَالَ «إِذَا شَكَّ أَحَدُكُمْ فِي صَلَاتِهِ فَلْيَتَحَرَّ الَّذِي يَرَى أَنَّهُ الصَّوَابُ فَيُتِمَّهُ ثُمَّ يَعْنِي يَسْجُدُ سَجْدَتَيْنِ»  

"The Messenger of Allah ﷺ said: 'If one of you is not sure about his prayer, let him estimate and prostrate twice after he has finished." (Using translation from Nasāʾī 1241)  

قَالَ رَسُولُ اللهِ ﷺ «إِذَا شَكَّ أَحَدُكُمْ فِي صَلَاتِهِ فَلْيَتَحَرَّ وَلْيَسْجُدْ سَجْدَتَيْنِ بَعْدَمَا يَفْرُغُ»  

"The Messenger of Allah ﷺ prayed and did more or less (rak'ahs). When he had said the taslim, it was said: 'O Messenger of Allah, has there been some change concerning the prayer?' He said: 'If there had been some change concerning the prayer, I would have told you. Rather I am a human being and I forget as you forget. If any one of you is not sure about his prayer, let him consider an estimate of what is correct, and complete his prayer on that basis, then say the taslim and prostrate twice.'" (Using translation from Nasāʾī 1242)  

صَلَّى رَسُولُ اللهِ ﷺ فَزَادَ أَوْ نَقَصَ فَقِيلَ يَا رَسُولَ اللهِ هَلْ حَدَثَ فِي الصَّلَاةِ شَيْءٌ قَالَ «لَوْ حَدَثَ شَيْءٌ أَنْبَأْتُكُمُوهُ وَلَكِنِّي إِنَّمَا أَنَا بِشْرٌ أَنْسَى كَمَا تَنْسَوْنَ فَأَيُّكُمْ مَا شَكَّ فِي صَلَاتِهِ فَلْيَنْظُرْ أَحْرَى ذَلِكَ إِلَى الصَّوَابِ فَلْيُتِمَّ عَلَيْهِ ثُمَّ لِيُسَلِّمْ وَلْيَسْجُدْ سَجْدَتَيْنِ»  

"The Messenger of Allah ﷺ prayed and did more or less (rak'ahs). When he had said the salam we said: 'O Messenger of Allah ﷺ, has there been some change concerning the prayer?' He said: 'Why are you asking?' So we told him what he had done. He turned back toward the Qiblah and prostrated two prostrations of forgetfulness, then he turned to face us and said: 'If there had been some change concerning the prayer I would have told you.' Then he said: 'Rather I am a human being and I forget as you forget. If any one of you is not sure about his prayer, let him estimate what he thinks is correct, and complete his prayer on that basis, then say the taslim and prostrate two prostrations of forgetfulness.'" (Using translation from Nasāʾī 1243)  

صَلَّى رَسُولُ اللهِ ﷺ صَلَاةً فَزَادَ فِيهَا أَوْ نَقَصَ فَلَمَّا سَلَّمَ قُلْنَا يَا نَبِيَّ اللهِ هَلْ حَدَثَ فِي الصَّلَاةِ شَيْءٌ؟ قَالَ «وَمَا ذَاكَ» قَالَ فَذَكَرْنَا لَهُ الَّذِي فَعَلَ فَثَنَى رِجْلَهُ فَاسْتَقْبَلَ الْقِبْلَةَ فَسَجَدَ سَجْدَتَيِ السَّهْوِ ثُمَّ أَقْبَلَ عَلَيْنَا بِوَجْهِهِ قَالَ «لَوْ حَدَثَ فِي الصَّلَاةِ شَيْءٌ لَأَنْبَأَتُكُمْ بِهِ» ثُمَّ قَالَ «إِنَّمَا أَنَا بِشْرٌ مِثْلُكُمْ أَنْسَى كَمَا تَنْسَوْنَ فَأَيُّكُمْ نَسِيَ فِي صَلَاتِهِ شَيْئًا فَلْيَتَحَرَّ الَّذِي يَرَى أَنَّهُ هُوَ الصَّوَابُ ثُمَّ يُسَلِّمُ ثُمَّ يَسْجُدُ سَجْدَتَيِ السَّهْوِ»  

The Messenger of Allah ﷺ prayed Zuhr then he turned to face them and they said: 'Has there been some change concerning the prayer?' He said: 'Why are you asking?' They told him what he had done, so he turned back toward the Qiblah and prostrated twice. Then he said the salam and turned to face them and said: 'I am only human, I forget as you forget, so if I forget, then remind me.' And he said: 'If there had been some change concerning the prayer I would have told you.' And he said: 'If one of you is not sure about his prayer, let him estimate what is closest to what is correct, then let him complete it on that basis, then prostrate twice.' (Using translation from Nasāʾī 1244)   

أَنَّ رَسُولَ اللهِ ﷺ صَلَّى صَلَاةَ الظُّهْرِ ثُمَّ أَقْبَلَ عَلَيْهِمْ بِوَجْهِهِ فَقَالُوا أَحْدَثَ فِي الصَّلَاةِ حَدَثٌ قَالَ «وَمَا ذَاكَ» فَأَخْبَرُوهُ بِصَنِيعِهِ فَثَنَى رِجْلَهُ وَاسْتَقْبَلَ الْقِبْلَةَ فَسَجَدَ سَجْدَتَيْنِ ثُمَّ سَلَّمَ ثُمَّ أَقْبَلَ عَلَيْهِمْ بِوَجْهِهِ فَقَالَ «إِنَّمَا أَنَا بِشْرٌ مِثْلُكُمْ أَنْسَى كَمَا تَنْسَوْنَ فَإِذَا نَسِيتُ فَذَكِّرُونِي» قَالَ وَقَالَ «لَوْ كَانَ حَدَثَ فِي الصَّلَاةِ حَدَثٌ أَنْبَأْتُكُمْ» قَالَ وَقَالَ «إِذَا أَوْهَمَ أَحَدُكُمْ فِي صَلَاةٍ فَلْيَتَحَرَّ أَقْرَبَ ذَلِكَ مِنَ الصَّوَابِ ثُمَّ لِيُتِمَّ عَلَيْهِ ثُمَّ لِيَسْجُدْ سَجْدَتَيْنِ»  

"Whoever us not sure about his prayer, then let him estimate what is correct, then let him prostrate twice after he finished his prayer, while he is sitting." (Using translation from Nasāʾī 1245)  

عَبْدُ اللهِ «مَنْ أَوْهَمَ فِي صَلَاتِهِ فَلْيَتَحَرَّ الصَّوَابَ ثُمَّ لْيَسْجُدْ سَجْدَتَيْنِ بَعْدَمَا يَفْرُغُ وَهُوَ جَالِسٌ»  

"Whoever has doubt, or is not sure, let him estimate what is correct, then let him prostrate twice." (Using translation from Nasāʾī 1246)  

«مَنْ شَكَّ أَوْ أَوْهَمَ فَلْيَتَحَرَّ ثُمَّ لِيَسْجُدَ سَجْدَتَيْنِ»  

"They used to say: 'If one is not sure of what he estimates is correct, then prostrate twice.'" (Using translation from Nasāʾī 1247)  

كَانُوا يَقُولُونَ «إِذَا أَوْهَمَ يَتَحَرَّى الصَّوَابَ ثُمَّ يَسْجُدَ سَجْدَتَيْنِ»  

The Prophet ﷺ said: Anyone who is in doubt in his prayer should make two prostrations after giving the salutation. (Using translation from Abū Dāʾūd 1033)  

قَالَ رَسُولُ اللهِ ﷺ «مَنْ شَكَّ فِي صَلَاتِهِ فَلْيَسْجُدْ سَجْدَتَيْنِ بَعْدَمَا يُسَلِّمُ»  

The Prophet ﷺ said: Anyone who is in doubt in his prayer should make two prostrations after giving the salutation. (Using translation from Abū Dāʾūd 1033)  

أَنَّ رَسُولَ اللهِ ﷺ قَالَ «مَنْ شَكَّ فِي صَلَاتِهِ فَلْيَسْجُدْ سَجْدَتَيْنِ بَعْدَ التَّسْلِيمِ»  

The Prophet ﷺ said: Anyone who is in doubt in his prayer should make two prostrations after giving the salutation. (Using translation from Abū Dāʾūd 1033)  

أَنَّ النَّبِيَّ ﷺ قَالَ «مَنْ شَكَّ فِي صَلَاتِهِ فَلْيَسْجُدْ سَجْدَتَيْنِ بَعْدَمَا يُسَلِّمُ»  

The Messenger of Allah ﷺ said: "Whoever has doubt during his prayer, let him prostrate twice." (One of the narrators) Hajjaj said: "After he has said the taslim." (Another of them) Rawh said: "While he is sitting." (Using translation from Nasāʾī 1251)  

أَنَّ رَسُولَ اللهِ ﷺ قَالَ «مَنْ شَكَّ فِي صَلَاةٍ فَلْيَسْجُدْ سَجْدَتَيْنِ» قَالَ حَجَّاجٌ «بَعْدَمَا يُسَلِّمُ» وَقَالَ رَوْحٌ «وَهُو جَالِسٌ»  

Abu Hurairah reported the Messenger of Allah ﷺ as saying; When one of you stands up to pray, the devil comes to him and confuses him so that he does not know how much he has prayed. If any of you has such an experience, he should perform two prostrations while he is sitting. Abu Dawud said; This tradition has been narrated in a similar manner by Ibn ‘Uyainab, Ma’mar and al-Laith. (Using translation from Abū Dāʾūd 1030)  

أَنَّ رَسُولَ اللهِ ﷺ قَالَ «إِنَّ أَحَدَكُمْ إِذَا قَامَ يُصَلِّي جَاءَهُ الشَّيْطَانُ فَلَبَسَ عَلَيْهِ حَتَّى لَا يَدْرِي كَمْ صَلَّى فَإِذَا وَجَدَ ذَلِكَ أَحَدُكُمْ فَلْيَسْجُدْ سَجْدَتَيْنِ وَهُوَ جَالِسٌ»  

"The Messenger of Allah ﷺ said: 'When the call to prayer is given, the Shaitan runs away breaking wind loudly. When the Tathwb (Iqamah) is completed, he comes back and whispers to a man in his hear, until he does not know how many (rak'ahs) he has prayed. If any one of you notices that, let him prostrate twice.'" (Using translation from Nasāʾī 1253)  

قَالَ رَسُولُ اللهِ ﷺ «إِذَا نُودِيَ بِالصَّلَاةِ أَدْبَرَ الشَّيْطَانُ لَهُ ضُرَاطٌ فَإِذَا قُضِيَ التَّثْوِيبُ أَقْبَلَ حَتَّى يَخْطِرَ بَيْنَ الْمَرْءِ وَقَلْبِهِ لَا يَدْرِي كَمْ صَلَّى فَإِذَا رَأَى أَحَدُكُمْ ذَلِكَ فَلْيَسْجُدْ سَجْدَتَيْنِ»