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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:9364 – Isḥāq > ʿAbd al-Razzāq > al-Thawrī > Khuṣayf > Abū ʿUbaydah > Ibn Masʿūd

[Machine] "Neglect occurs when one stands in a position where one should be sitting, or sits in a position where one should be standing, or offers salutations during the two units of prayer. In that case, one should complete their prayer and then perform two prostrations while sitting and reciting the tashahhud."  

الطبراني:٩٣٦٤ – حَدَّثَنَا إِسْحَاقُ عَنْ عَبْدِ الرَّزَّاقِ عَنِ الثَّوْرِيِّ عَنْ خُصَيْفٍ عَنْ أَبِي عُبَيْدَةَ عَنِ ابْنِ مَسْعُودٍ قَالَ

«السَّهْوُ إِذَا قَامَ فِيمَا يُجْلَسُ فِيهِ أَوْ قَعَدَ فِيمَا يُقَامُ فِيهِ أَوْ سَلَّمَ فِي رَكْعَتَيْنِ فَإِنَّهُ يَفْرُغُ مِنْ صَلَاتِهِ وَيَسْجُدُ سَجْدَتَيْنِ وَهُوَ جَالِسٌ يَتَشَهَّدُ فِيهِمَا»  

See similar narrations below:

Collected by Bayhaqī, Suyūṭī
bayhaqi:3854 – Abū Bakr Muḥammad b. Ibrāhīm al-Ḥāfiẓ > Abū Naṣr al-ʿIrāqī > Sufyān b. Muḥammad al-Jawharī > ʿAlī b. al-Ḥasan > ʿAbdullāh b. al-Walīd > Sufyān > Khuṣayf > Abū ʿUbaydah > ʿAbdullāh b. Masʿūd

[Machine] He said that if a person makes a mistake while standing or sitting, or if they bow down in what should be done while standing, or perform the Salam while in the two units of prayer, then they should complete their prayer and perform two prostrations while still sitting, making the Tashahhud during those two prostrations, and then perform the Salam.  

البيهقي:٣٨٥٤ – وَأَخْبَرَنَا أَبُو بَكْرٍ مُحَمَّدُ بْنُ إِبْرَاهِيمَ الْحَافِظُ أنبأ أَبُو نَصْرٍ الْعِرَاقِيُّ ثنا سُفْيَانُ بْنُ مُحَمَّدٍ الْجَوْهَرِيُّ ثنا عَلِيُّ بْنُ الْحَسَنِ ثنا عَبْدُ اللهِ بْنُ الْوَلِيدِ ثنا سُفْيَانُ قَالَ حَدَّثَنِي خُصَيْفٌ عَنْ أَبِي عُبَيْدَةَ عَنْ عَبْدِ اللهِ بْنِ مَسْعُودٍ ؓ

أَنَّهُ قَالَ السَّهْوُ إِذَا قَامَ فِيمَا يَجْلِسُ فِيهِ أَوْ قَعَدَ فِيمَا يُقَامُ فِيهِ أَوْ سَلَّمَ فِي رَكْعَتَيْنِ فَإِنَّهُ يَفْرُغُ مِنْ صَلَاتِهِ وَيَسْجُدُ سَجْدَتَيْنِ وَهُوَ جَالِسٌ يَتَشَهَّدُ فِيهِمَا وَيُسَلِّمُ  

suyuti:430-165b – Ibn Masʿūd
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السيوطي:٤٣٠-١٦٥b –

"عَنِ ابْنِ مَسْعُودٍ قَالَ: السَّهْوُ إِذَا قَامَ فِيمَا يُجْلَسُ فِيهِ، أَوْ قَعَدَ فِيمَا يُقَامُ فِيهِ أَوْ يَجْلِسُ في رَكْعَتَيْنِ فَإِنَّهُ يَفْرُغُ مِنْ صَلَاتِهِ وَيَسْجُدُ سَجْدَتَيْنِ وَهُوَ جَالِسٌ يَتَشَهَّدُ فِيهَا".  

[عب] عبد الرازق