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Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
tabarani:9183 – ʿAlī b. ʿAbd al-ʿAzīz > Abū Nuʿaym > Misʿar > al-Ḥakam > Abū Wāʾil

"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)   

الطبراني:٩١٨٣ – حَدَّثَنَا عَلِيُّ بْنُ عَبْدِ الْعَزِيزِ ثنا أَبُو نُعَيْمٍ ثنا مِسْعَرٌ عَنِ الْحَكَمِ عَنْ أَبِي وَائِلٍ قَالَ قَالَ

عَبْدُ اللهِ «مَنْ شَكَّ أَوْ وَهِمَ فِي صَلَاتِهِ فَلْيَتَحَرَّ ثُمَّ يَسْجُدْ سَجْدَتَيْنِ»  

See similar narrations below:

Collected by Nasāʾī, Nasāʾī's Kubrá
nasai:1245 – Sūwayd b. Naṣr > ʿAbdullāh > Shuʿbah > al-Ḥakam > Abū Wāʾil

"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."  

النسائي:١٢٤٥ – أَخْبَرَنَا سُوَيْدُ بْنُ نَصْرٍ قَالَ أَنْبَأَنَا عَبْدُ اللَّهِ عَنْ شُعْبَةَ عَنِ الْحَكَمِ قَالَ سَمِعْتُ أَبَا وَائِلٍ يَقُولُ قَالَ

عَبْدُ اللَّهِ مَنْ أَوْهَمَ فِي صَلاَتِهِ فَلْيَتَحَرَّ الصَّوَابَ ثُمَّ يَسْجُدْ سَجْدَتَيْنِ بَعْدَ مَا يَفْرُغُ وَهُوَ جَالِسٌ  

nasai:1246 – Sūwayd b. Naṣr > ʿAbdullāh > Misʿar > al-Ḥakam > Abū Wāʾil > ʿAbdullāh

"Whoever has doubt, or is not sure, let him estimate what is correct, then let him prostrate twice."  

النسائي:١٢٤٦ – أَخْبَرَنَا سُوَيْدُ بْنُ نَصْرٍ قَالَ أَنْبَأَنَا عَبْدُ اللَّهِ عَنْ مِسْعَرٍ عَنِ الْحَكَمِ عَنْ أَبِي وَائِلٍ عَنْ عَبْدِ اللَّهِ قَالَ

مَنْ شَكَّ أَوْ أَوْهَمَ فَلْيَتَحَرَّ الصَّوَابَ ثُمَّ لْيَسْجُدْ سَجْدَتَيْنِ  

nasai-kubra:1169 – Sūwayd b. Naṣr > ʿAbdullāh > Shuʿbah > al-Ḥakam > Abū Wāʾil

"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)  

الكبرى للنسائي:١١٦٩ – أَخْبَرَنَا سُوَيْدُ بْنُ نَصْرٍ قَالَ أَخْبَرَنَا عَبْدُ اللهِ عَنْ شُعْبَةَ عَنِ الْحَكَمِ قَالَ سَمِعْتُ أَبَا وَائِلٍ يَقُولُ قَالَ

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

nasai-kubra:1170 – Sūwayd b. Naṣr > ʿAbdullāh > Misʿar > al-Ḥakam > Abū Wāʾil > ʿAbdullāh

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

الكبرى للنسائي:١١٧٠ – أَخْبَرَنَا سُوَيْدُ بْنُ نَصْرٍ قَالَ أَخْبَرَنَا عَبْدُ اللهِ عَنْ مِسْعَرٍ عَنِ الْحَكَمِ عَنْ أَبِي وَائِلٍ عَنْ عَبْدِ اللهِ قَالَ

«مَنْ شَكَّ أَوْ أَوْهَمَ فَلْيَتَحَرَّ ثُمَّ لِيَسْجُدَ سَجْدَتَيْنِ»