Chapter 36: Signet-Rings (Kitab Al-Khatam)
Anas b. Malik said that he saw a silver signet-ring on the hand of the Prophet (ﷺ) only for a day. The people then fashioned and wore (rings). The Prophet (ﷺ) then threw it away and the people also threw (them.) Abu Dawud said: Ziyad b. Sa' d, Shu' aib and Ibn Musafir transmitted it from al-Zuhri. 'Ali said in their versions: "of silver".
Sunan Abi Dawud 4221