Narrated Aisha, Ummul Mu'minin:

I saw the Messenger of Allah ﷺ that he kissed Uthman ibn Maz'un while he was dead, and I saw that tears were flowing (from his eyes).

حَدَّثَنَا مُحَمَّدُ بْنُ كَثِيرٍ، أَخْبَرَنَا سُفْيَانُ، عَنْ عَاصِمِ بْنِ عُبَيْدِ اللَّهِ، عَنِ الْقَاسِمِ، عَنْ عَائِشَةَ، قَالَتْ رَأَيْتُ رَسُولَ اللَّهِ ﷺ يُقَبِّلُ عُثْمَانَ بْنَ مَظْعُونٍ وَهُوَ مَيِّتٌ حَتَّى رَأَيْتُ الدُّمُوعَ تَسِيلُ .