Ja'far bin Muhammad narrated from his father that the Messenger of Allah (peace and blessings be upon him) wore a gold ring on the little finger of his right hand until, when he (peace and blessings be upon him) returned home, he threw it away and did not wear it again. Then he wore a silver ring on his left hand. Sayyiduna Abu Bakr (may Allah be pleased with him), Sayyiduna Umar (may Allah be pleased with him), Sayyiduna Ali bin Abi Talib (may Allah be pleased with him), and Sayyiduna Hasan and Husayn (may Allah be pleased with them both) also wore their rings on their left hands. Ja'far bin Muhammad said: On the rings of Hasan and Husayn there was the remembrance of Allah. He said: And on my father's ring there was: "Al-'izzatu lillahi jami'a" (All honour belongs to Allah).
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الزكاة / 7569