Sahih Bukhari Volume 7, Book 77, Hadith 5868

حَدَّثَنَا يُوسُفُ بْنُ مُوسَى، حَدَّثَنَا أَبُو أُسَامَةَ، حَدَّثَنَا عُبَيْدُ اللَّهِ، عَنْ نَافِعٍ، عَنِ ابْنِ عُمَرَ ـ رضى الله عنهما أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم اتَّخَذَ خَاتَمًا مِنْ ذَهَبٍ أَوْ فِضَّةٍ، وَجَعَلَ فَصَّهُ مِمَّا يَلِي كَفَّهُ، وَنَقَشَ فِيهِ مُحَمَّدٌ رَسُولُ اللَّهِ‏.‏ فَاتَّخَذَ النَّاسُ مِثْلَهُ، فَلَمَّا رَآهُمْ قَدِ اتَّخَذُوهَا رَمَى بِهِ، وَقَالَ ‏"‏ لاَ أَلْبَسُهُ أَبَدًا ‏"‏‏.‏ ثُمَّ اتَّخَذَ خَاتَمًا مِنْ فِضَّةٍ، فَاتَّخَذَ النَّاسُ خَوَاتِيمَ الْفِضَّةِ‏.‏ قَالَ ابْنُ عُمَرَ فَلَبِسَ الْخَاتَمَ بَعْدَ النَّبِيِّ صلى الله عليه وسلم أَبُو بَكْرٍ ثُمَّ عُمَرُ ثُمَّ عُثْمَانُ، حَتَّى وَقَعَ مِنْ عُثْمَانَ فِي بِئْرِ أَرِيسَ‏

Narrated By Ibn. 'Umar : Allah's Apostle wore a gold ring or a silver ring and placed its stone towards the palm of his hand and had the name 'Muhammad, the Apostle of Allah' engraved on it. The people also started wearing gold rings like it, but when the Prophet saw them wearing such rings, he threw away his own ring and said. "I will never wear it," and then wore a silver ring, whereupon the people too started wearing silver rings. Ibn Umar added: After the Prophet Abu Bakr wore the ring, and then Umar and then 'Uthman wore it till it fell in the Aris well from 'Uthman.