Hadith 5867
Narrated Abdullah bin `Umar: Allah's Apostle wore a gold ring, then he threw it and said, "I will never wear it." The people also threw their (gold) rings.
Hadith 5868
Narrated Anas bin Malik: that he saw a silver ring on the hand of Allah's Apostle for one day only. Then the people had silver rings made for themselves and wore it. On that, Allah's Apostle threw away their rings as well. (For the details of this Hadith, see Fath-ul-Bari, Vol. 12, page 438).