Sahih al-Bukhari, Hadith 5873 ⓘ

Narrated Ibn `Umar: Allah's Messenger had a silver ring made for himself and it was worn by him on his hand. Afterwards it was worn by Abu Bakr, and then by `Umar, and then by `Uthman till it fell in the Aris well. (On that ring) was engraved: 'Muhammad, the Messenger of Allah."

حَدَّثَنِي مُحَمَّدُ بْنُ سَلاَمٍ، أَخْبَرَنَا عَبْدُ اللَّهِ بْنُ نُمَيْرٍ، عَنْ عُبَيْدِ اللَّهِ، عَنْ نَافِعٍ، عَنِ ابْنِ عُمَرَ ـ رضى الله عنهما ـ قَالَ اتَّخَذَ رَسُولُ اللَّهِ صلى الله عليه وسلم خَاتَمًا مِنْ وَرِقٍ، وَكَانَ فِي يَدِهِ، ثُمَّ كَانَ بَعْدُ فِي يَدِ أَبِي بَكْرٍ، ثُمَّ كَانَ بَعْدُ فِي يَدِ عُمَرَ، ثُمَّ كَانَ بَعْدُ فِي يَدِ عُثْمَانَ، حَتَّى وَقَعَ بَعْدُ فِي بِئْرِ أَرِيسَ، نَقْشُهُ مُحَمَّدٌ رَسُولُ اللَّهِ‏.‏