Sunan Abi Dawud Book 36, Hadith 12

The Messenger of Allah (ﷺ) said to me: Say: O Allah, guide me, and set me right. Remember by guidance (hidayah) the showing of the straight path, and remember by setting right (sadad) the setting right of an arrow. Then pointing to the middle finger and the one next to it, he said: He forbade me to wear a signet-ring on this finger of mine or on this (Asim was doubtful). He forbade me to wear qassiyyah (qasi garments) and mitharah. Abu Burdah said: We asked 'Ali: What is qasiyyah ? He said: These are garments imported to us from Syria or Egypt. They are stripped and marked like citrons. And mitharah was a thing made by women for their husbands.

Previous Hadith

The signet-ring of the Prophet (ﷺ) was of iron polished with silver. Sometimes it remained in my possession. Al-Mu'ayqib was in charge of the signet-ring of the Prophet (ﷺ).

Sunan Abi Dawud Book 36, Hadith 11
Next Hadith

The Prophet (ﷺ) used to wear the signet-ring on his right hand.

Sunan Abi Dawud Book 36, Hadith 13