Sayyiduna Anas (may Allah be pleased with him) was asked: Did the Messenger of Allah (peace and blessings be upon him) have a ring? He said: Yes. One night he (peace and blessings be upon him) delayed Isha until half of the night, or close to it, had passed; then he (peace and blessings be upon him) came and said: "The people have prayed and gone to sleep, and you have remained in prayer ever since you have been waiting for the prayer."
Sayyiduna Anas (may Allah be pleased with him) says: It is as if I am looking at the gleam of his (peace and blessings be upon him) silver ring; and he pointed with his left hand and described it.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 1756