[Machine] The Prophet ﷺ prayed three units (rak'ahs) and then he said the salaam. It was said to him, so he stood up and prayed another unit, then he said the salaam. After that, he performed two prostrations while he was sitting.
أَنَّ النَّبِيَّ ﷺ صَلَّى ثَلَاثَ رَكَعَاتٍ فَسَلَّمَ فَقِيلَ لَهُ فَقَامَ فَصَلَّى رَكْعَةً فَسَلَّمَ ثُمَّ سَجَدَ سَجْدَتَيْنِ وَهُوَ جَالِسٌ
Abu Hurairah reported; The Prophet ﷺ offered the noon prayer and he gave the salutation at the end of two rakahs. He was asked. Has the prayer been shortened ? then he offered two rakahs of the prayer and made two prostrations (at the end of it).
أَنَّ النَّبِيَّ ﷺ صَلَّى الظُّهْرَ فَسَلَّمَ فِي الرَّكْعَتَيْنِ فَقِيلَ لَهُ نَقَصَتِ الصَّلاَةُ فَصَلَّى رَكْعَتَيْنِ ثُمَّ سَجَدَ سَجْدَتَيْنِ
The Messenger of Allah ﷺ prayed Zuhr with two rak'ahs, then said the salam. They said: "Has the prayer been shortened?" So he stood up and prayed two rak'ahs, then he said the salam, then he prostrated twice. (Using translation from Nasāʾī 1227)
أَنَّ رَسُولَ اللهِ ﷺ صَلَّى الظُّهْرَ رَكْعَتَيْنِ ثُمَّ سَلَّمَ فَقِيلَ لَهُ نَقَصَ مِنَ الصَّلَاةِ؟ فَصَلَّى رَكْعَتَيْنِ أُخَرَتَيْنِ ثُمَّ سَلَّمَ ثُمَّ سَجَدَ سَجْدَتَيْنِ
[Machine] The Prophet ﷺ used to pray three units of prayer before or after the noon or afternoon prayer. It was said to him: "Is that how you pray?" He replied, "Yes." So, he prayed one unit of prayer, then he sat and made the testimony of faith and salutation, then he prostrated twice for the forgetfulness, then he made the salutation.
أَنَّ النَّبِيَّ ﷺ صَلَّى صَلَاةَ الظُّهْرِ أَوِ الْعَصْرِ ثَلَاثَ رَكَعَاتٍ فَقِيلَ لَهُ فَقَالَ «أَكَذَلِكَ؟ » قَالُوا نَعَمْ فَصَلَّى رَكْعَةً ثُمَّ تَشَهَّدَ وَسَلَّمَ ثُمَّ سَجَدَ سَجْدَتَيِ السَّهْوِ ثُمَّ سَلَّمَ
"أَنَّ النَّبِىَّ ﷺ صَلَّى الظُهْرَ رَكْعَتَيْن ثُمَ سَلَّمَ، فَقِيلَ لَهُ: انْقُصْ من الصَّلَاةِ، فَصَلَّى رَكعَتين أُخَراوَيْن فَسَلَّم، ثُمَ سَجَد سَجْدَتَيْن".