The Prophet ﷺ prayed and stood up following the first two rak'ahs, and they said (SubhanAllah). He carried on, then when he finished his prayer he performed two prostrations, then he said the Salam.  

أَنَّ النَّبِيَّ ﷺ صَلَّى فَقَامَ فِي الرَّكْعَتَيْنِ فَسَبَّحُوا فَمَضَى فَلَمَّا فَرَغَ مِنْ صَلاَتِهِ سَجَدَ سَجْدَتَيْنِ ثُمَّ سَلَّمَ  

It was narrated from ‘Abdur-Rahman Al-A’raj that Ibn Buhainah told him that the Prophet ﷺ stood up in the second Rak’ah of Zuhr and forgot to sit. When he had finished his prayer, and before he said the Salam, he performed the two prostrations for forgetfulness (Sahw) and said the Salam. (Using translation from Ibn Mājah 1207)   

أَخْبَرَهُ أَنَّ رَسُولَ اللهِ ﷺ قَامَ فِي الثِّنْتَيْنِ مِنَ الظُّهْرِ نَسِيَ الْجُلُوسَ حَتَّى إِذَا فَرَغَ مِنْ صَلَاتِهِ إِلَى أَنْ يُسَلِّمَ سَجَدَ سَجْدَتَيْنِ ثُمَّ خَتَمَ بِالتَّسْلِيمِ  

[Machine] The Messenger of Allah ﷺ performed two prostrations after the first two units of the Dhuhr or Asr prayer before he sat. After he finished his prayer, he performed two prostrations before saying the salaam.  

قَامَ رَسُولُ اللهِ ﷺ فِي الرَّكْعَتَيْنِ الْأُولَيَيْنِ مِنَ الظُّهْرِ أَوِ الْعَصْرِ فَلَمْ يَجْلِسْ فَلَمَّا فَرَغَ مِنْ صَلَاتِهِ قَالَ سَجَدَ سَجْدَتَيْنِ قَبْلَ أَنْ يُسَلِّمَ  

"Al-Mughirah bin Shu'bah les us in Salat. When he prayed two Rak'ah he stood without sitting. Those who were behind him said 'Subhan Allah' and he indicated to them that they should stand. He said the Taslim when he had finished his Salat and he performed two prostrations of As-Sahw, and said the Taslim. He said that Messenger of Allah did this." (Using translation from Tirmidhī 365)   

أَنْ قُومُوا فَلَمَّا فَرَغَ مِنْ صَلَاتِهِ سَلَّمَ ثُمَّ سَجَدَ سَجْدَتَيْنِ ثُمَّ قَالَ هَكَذَا صَنَعَ بِنَا رَسُولُ اللهِ ﷺ  

[Machine] "That the Messenger of Allah ﷺ stood up from the two units of the Dhuhr or Asr prayer and did not return until he finished his prayer, then he performed the two prostrations of forgetfulness, then he made the salaam."  

«أَنَّ رَسُولَ اللَّهِ ﷺ قَامَ مِنَ الرَّكْعَتَيْنِ مِنَ الظُّهْرِ أَوِ الْعَصْرِ فَلَمْ يَرْجِعْ حَتَّى فَرَغَ مِنْ صَلَاتِهِ ثُمَّ سَجَدَ سَجْدَتَيِ الْوَهْمِ ثُمَّ سَلَّمَ»  

[Machine] "He informed him that the Messenger of Allah ﷺ stood for two units of Dhuhr prayer without sitting down. After completing his prayer, he prostrated two prostrations and then he gave the salutation."  

أَخْبَرَهُ «أَنَّ رَسُولَ اللَّهِ ﷺ قَامَ فِي ثِنْتَيْنِ مِنَ الظُّهْرِ فَلَمْ يَجْلِسْ فَلَمَّا قَضَى صَلَاتَهُ سَجَدَ سَجْدَتَيْنِ ثُمَّ سَلَّمَ بَعْدَ ذَلِكَ»  

The Prophet ﷺ prayed and stood up following the first two rak'ahs, and they said (SubhanAllah). He carried on, then when he finished his prayer he performed two prostrations, then he said the Salam. (Using translation from Nasāʾī 1178)  

أَنَّ النَّبِيَّ ﷺ «صَلَّى فَقَامَ فِي الرَّكْعَتَيْنِ فَسَبَّحُوا فَمَضَى فَلَمَّا فَرَغَ مِنْ صَلَاتِهِ سَجَدَ سَجْدَتَيْنِ ثُمَّ سَلَّمَ»