“The Messenger of Allah ﷺ used to do that.”  

أَنَّهُ كَانَ إِذَا صَلَّى الْجُمُعَةَ انْصَرَفَ فَصَلَّى سَجْدَتَيْنِ فِي بَيْتِهِ ثُمَّ قَالَ كَانَ رَسُولُ اللَّهِ ﷺ يَصْنَعُ ذَلِكَ  

It was narrated from Salim, from his father, that the Prophet ﷺ used to pray two Rak’ah after Jumu’ah.  

أَنَّ النَّبِيَّ ﷺ كَانَ يُصَلِّي بَعْدَ الْجُمُعَةِ رَكْعَتَيْنِ  

“The Messenger of Allah ﷺ said: ‘If you pray after Friday, then pray four (Rak’ah).’”  

رَسُولُ اللَّهِ ﷺ إِذَا صَلَّيْتُمْ بَعْدَ الْجُمُعَةِ فَصَلُّوا أَرْبَعًا