Bukhari :: Book 7 :: Volume 72 :: Hadith 755

Narrated 'Abdullah:

Allah's Apostle wore a gold or silver .. ring and placed its stone towards the palm of his hand. The people also started wearing gold rings like it, but when the Prophet saw them wearing such rings, he threw away that golden ring and then wore a silver ring.

Source materials are from the University of Southern California MSA site
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