Sunan an-Nasa'i, Volume 2, Book 13, Hadith 1227 (DarusSalam) ⓘ

It was narrated that Abu Hurairah said: "The Messenger of Allah led us in praying 'Asr, and he said the salam after two rak'ahs. Dhul-Yadain stood up and said: 'Has the prayer been shortened, O Messenger of Allah or did you forget?' The Messenger of Allah said: 'Neither.' He said: 'One of them happened, O Messenger of Allah.' The Messenger of Allah turned to the people and said: 'Is Dhul-Yadain speaking the truth?' They said: 'Yes.' So the Messenger of Allah completed what was left of the prayer, then he prostrated twice when he was sitting after the taslim."

أَخْبَرَنَا قُتَيْبَةُ، عَنْ مَالِكٍ، عَنْ دَاوُدَ بْنِ الْحُصَيْنِ، عَنْ أَبِي سُفْيَانَ، مَوْلَى ابْنِ أَبِي أَحْمَدَ أَنَّهُ قَالَ سَمِعْتُ أَبَا هُرَيْرَةَ، يَقُولُ صَلَّى بِنَا رَسُولُ اللَّهِ صلى الله عليه وسلم صَلاَةَ الْعَصْرِ فَسَلَّمَ فِي رَكْعَتَيْنِ فَقَامَ ذُو الْيَدَيْنِ فَقَالَ أَقُصِرَتِ الصَّلاَةُ يَا رَسُولَ اللَّهِ أَمْ نَسِيتَ فَقَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم ‏"‏ كُلُّ ذَلِكَ لَمْ يَكُنْ ‏"‏ ‏.‏ فَقَالَ قَدْ كَانَ بَعْضُ ذَلِكَ يَا رَسُولَ اللَّهِ ‏.‏ فَأَقْبَلَ رَسُولُ اللَّهِ صلى الله عليه وسلم عَلَى النَّاسِ فَقَالَ ‏"‏ أَصَدَقَ ذُو الْيَدَيْنِ ‏"‏ ‏.‏ فَقَالُوا نَعَمْ ‏.‏ فَأَتَمَّ رَسُولُ اللَّهِ صلى الله عليه وسلم مَا بَقِيَ مِنَ الصَّلاَةِ ثُمَّ سَجَدَ سَجْدَتَيْنِ وَهُوَ جَالِسٌ بَعْدَ التَّسْلِيمِ ‏.‏