Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
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
nasai-kubra:605 – Ismāʿīl b. Masʿūd > Khālid > Hishām > Yaḥyá > ʿAbd al-Raḥman al-Aʿraj > Sulaymān b. Salm > al-Naḍr > Hishām > Yaḥyá > ʿAbd al-Raḥman al-Aʿraj > ʿAbdullāh b. Mālik b. Buḥaynah

[Machine] He witnessed the Messenger of Allah ﷺ when he stood up from the two units of prayer and forgot to sit down, so he continued standing and then prostrated for two prostrations after he finished his prayer.  

الكبرى للنسائي:٦٠٥ – أَخْبَرَنَا إِسْمَاعِيلُ بْنُ مَسْعُودٍ قَالَ حَدَّثَنَا خَالِدٌ قَالَ حَدَّثَنَا هِشَامٌ عَنْ يَحْيَى قَالَ حَدَّثَنِي عَبْدُ الرَّحْمَنِ الْأَعْرَجُ وَأَخْبَرَنَا سُلَيْمَانُ بْنُ سَلْمٍ قَالَ أَخْبَرَنَا النَّضْرُ قَالَ أَخْبَرَنَا هِشَامٌ عَنْ يَحْيَى عَنْ عَبْدِ الرَّحْمَنِ الْأَعْرَجِ عَنْ عَبْدِ اللهِ بْنِ مَالِكِ بْنِ بُحَيْنَةَ

أَنَّهُ شَهِدَ رَسُولَ اللهِ ﷺ حِينَ قَامَ مِنَ الرَّكْعَتَيْنِ وَنَسِيَ أَنْ يَقْعُدَ فَمَضَى فِي قِيَامِهِ فَسَجَدَ سَجْدَتَيْنِ بَعْدَمَا فَرَغَ مِنْ صَلَاتِهِ