Muwatta Imam Malik Book of Prayer, Hadith 64
Yahya related to me from Malik from Ibn Shihab that Abu Bakr ibn Sulayman ibn Abi Hathma said, "I have heard that the Messenger of Allah ﷺ prayed two rakas of one of the two day-ti me prayers, dhuhr or asr, and said the taslim after two rakas. Dhu'sh-Shamalayn said to him, 'Has the prayer been shortened, Messenger of Allah, or have you forgotten?' The Messenger of Allah ﷺ said, 'The prayer has not been shortened and I have not forgotten.' Dhu'shShamalayn said, 'It was certainly one of those, Messenger of Allah.' The Messenger of Allah ﷺ approached the people and said, 'Has Dh u'sh-Shamalayn spoken the truth?' They said, 'Yes, Messenger of Allah,' and the Messenger of Allah ﷺ completed what remained of the prayer, and then said, 'Peace be upon you.' "
وَحَدَّثَنِي عَنْ مَالِكٍ، عَنِ ابْنِ شِهَابٍ، عَنْ أَبِي بَكْرِ بْنِ سُلَيْمَانَ بْنِ أَبِي حَثْمَةَ، قَالَ بَلَغَنِي أَنَّ رَسُولَ اللَّهِ ﷺ رَكَعَ رَكْعَتَيْنِ مِنْ إِحْدَى صَلاَتَىِ النَّهَارِ - الظُّهْرِ أَوِ الْعَصْرِ - فَسَلَّمَ مِنَ اثْنَتَيْنِ فَقَالَ لَهُ ذُو الشِّمَالَيْنِ أَقَصُرَتِ الصَّلاَةُ يَا رَسُولَ اللَّهِ أَمْ نَسِيتَ فَقَالَ لَهُ رَسُولُ اللَّهِ ﷺ " مَا قَصُرَتِ الصَّلاَةُ وَمَا نَسِيتُ " . فَقَالَ ذُو الشِّمَالَيْنِ قَدْ كَانَ بَعْضُ ذَلِكَ يَا رَسُولَ اللَّهِ . فَأَقْبَلَ رَسُولُ اللَّهِ ﷺ عَلَى النَّاسِ فَقَالَ " أَصَدَقَ ذُو الْيَدَيْنِ " . فَقَالُوا نَعَمْ يَا رَسُولَ اللَّهِ . فَأَتَمَّ رَسُولُ اللَّهِ ﷺ مَا بَقِيَ مِنَ الصَّلاَةِ ثُمَّ سَلَّمَ .