“The Messenger of Allah ﷺ kissed ‘Uthman bin Maz’un when he had died, and it is as if I can see him with his tears flowing down his cheeks.”  

قَبَّلَ رَسُولُ اللَّهِ ﷺ عُثْمَانَ بْنَ مَظْعُونٍ وَهُوَ مَيِّتٌ فَكَأَنِّي أَنْظُرُ إِلَى دُمُوعِهِ تَسِيلُ عَلَى خَدَّيْهِ  

It was narrated from Ibn ‘Abbas and ‘Aishah that Abu Bakr kissed the Prophet ﷺ when he died.  

أَنَّ أَبَا بَكْرٍ قَبَّلَ النَّبِيَّ ﷺ وَهُوَ مَيِّتٌ