The Apostle of Allah ﷺ performed two prostrations for forgetfulness after salutation and talking.  

أَنَّ النَّبِيَّ ﷺ سَجَدَ سَجْدَتَىِ السَّهْوِ بَعْدَ السَّلاَمِ وَالْكَلاَمِ  

The Messenger of Allah ﷺ prostrated twice after the salam on the day of Dhul-Yadain.  

أَنَّ رَسُولَ اللَّهِ ﷺ سَجَدَ يَوْمَ ذِي الْيَدَيْنِ سَجْدَتَيْنِ بَعْدَ السَّلاَمِ  

Abu Hurairah reported; He then made two prostration on account of forgetfulness after he had given the salutation.  

ثُمَّ سَجَدَ سَجْدَتَىِ السَّهْوِ بَعْدَ مَا سَلَّمَ  

[Machine] That the Messenger of Allah ﷺ made a mistake in the prayer, so he performed the prostrations of forgetfulness after completing the speech.  

أَنَّ رَسُولَ اللهِ ﷺ سَهَا فِي الصَّلَاةِ فَسَجَدَ سَجْدَتَيِ السَّهْوِ بَعْدَ الْكَلَامِ  

[Machine] The Prophet Muhammad ﷺ performed the two prostrations of forgetfulness after the greeting of peace.  

سَجَدَ رَسُولُ اللهِ ﷺ سَجْدَتَيِ السَّهْوِ بَعْدَ السَّلَامِ  

"التَّسْلِيمُ بعدَ سَجْدَتَيِ السهو".  

"أَنَّ النَّبِيَّ ﷺ تَكَلَّمَ ثُمَّ سَجَدَ سَجْدَتَى السَّهْوِ".  

"أَنَّ الَّنبىَّ ﷺ سَجَدَ سَجْدتَى السَّهْو بَعْدَمَا سَلَّم وَكَلَمَّ فَسَجَد وَكَبَّرَ وَهُوَ جِالسٌ ثُمَّ رَفَعَ وَكَبَّرَ".