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.
nasai:1258Sūwayd b. Naṣr > ʿAbdullāh > Sufyān > al-Ḥasan b. ʿUbaydullāh > Ibrāhīm > ʿAlqamah Ṣallá Khams Falammā Sallam > Ibrāhīm b. Sūwayd Yā Abū Shibl Ṣallayt Khams > Akadhalik Yā Aʿwar Fasajad Sajdata al-Sahw Thum

"Alqamah prayed five (rak'ahs) and when he said the taslim, Ibrahim bin Suwaid said : 'O Abu Shibl, you prayed five!' He said: 'Is that true, O odd-eyed one?' Then he prostrated two prostrations of forgetfulness, then he said: 'This is what the Messenger of Allah ﷺ did.'"  

النسائي:١٢٥٨أَخْبَرَنَا سُوَيْدُ بْنُ نَصْرٍ قَالَ أَنْبَأَنَا عَبْدُ اللَّهِ عَنْ سُفْيَانَ عَنِ الْحَسَنِ بْنِ عُبَيْدِ اللَّهِ عَنْ إِبْرَاهِيمَ أَنَّ عَلْقَمَةَ صَلَّى خَمْسًا فَلَمَّا سَلَّمَ قَالَ إِبْرَاهِيمُ بْنُ سُوَيْدٍ يَا أَبَا شِبْلٍ صَلَّيْتَ خَمْسًا فَقَالَ

أَكَذَلِكَ يَا أَعْوَرُ فَسَجَدَ سَجْدَتَىِ السَّهْوِ ثُمَّ قَالَ هَكَذَا فَعَلَ رَسُولُ اللَّهِ ﷺ