(50) باب نَقْشِ الْخَاتَمِ
Narrated Ibn `Umar:
Allah's Messenger (ﷺ) 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."
Reference: Sahih al-Bukhari 5873
In-book reference: Book 77, Hadith 90
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 7, Book 72, Hadith 762