[Machine] The Messenger of Allah ﷺ led them in Asr prayer three times and forgot one. So, he turned away and entered upon some of his wives. A man from his companions named Dhu ash-Shimalayn entered upon him and said, "O Messenger of Allah! Did the prayer get shortened?" He said, "What is that?" He said, "You prayed three times." So, he took him by the hand and went out to a group of people who were with him and he said, "Is Dhu'al-Yadayn (the one with two hands) truthful?" They said, "What is that, O Messenger of Allah?" He said, "He claims that I prayed three times." They said, "He is truthful, so we thought you were commanded in that." So, he prayed one unit of prayer with them and then performed the two prostrations of forgetfulness.  

أَنَّ رَسُولَ اللهِ ﷺ صَلَّى بِهِمُ الْعَصْرَ ثَلَاثًا وَنَسِي وَاحِدَةً فَانْصَرَفَ فَدَخَلَ عَلَى بَعْضِ نِسَائِهِ فَدَخَلَ عَلَيْهِ رَجُلٌ مِنْ أَصْحَابِهِ يُسَمَّى ذُو الشِّمَالَيْنِ فَقَالَ يَا رَسُولَ اللهِ أَنَقُصَتِ الصَّلَاةُ؟ قَالَ «وَمَا ذَاكَ؟» قَالَ صَلَّيْتَ ثَلَاثًا فَأَخَذَ بِيَدِهِ فَخَرَجَ إِلَى قَوْمٍ كَانُوا مَعَهُ فَقَالَ «أَصَدَقَ ذُو الْيَدَيْنِ؟» قَالُوا وَمَا ذَاكَ يَا رَسُولَ اللهِ؟ قَالَ «يَزْعُمُ أَنِّي صَلَّيْتُ ثَلَاثًا» قَالُوا صَدَقَ فَظَنَنَّا أَنَّكَ أُمِرْتَ فِي ذَلِكَ بِأَمْرٍ «فَصَلَّى بِهِمْ رَكْعَةً ثُمَّ سَجَدَ سَجْدَتَيِ السَّهْوِ»