Shamail al-Muhammadiyah: Stating That Rasoolullah Wore The Ring On His Right Hand – Hadith No. 98 — The Prophet (Allah bless him and give him peace) chose a signet ring of silver… (Hadith No. 98)

Ibn 'Umar said: "The Prophet (Allah bless him and give him peace) chose a signet ring of silver, and put its stone in the part close to the
palm of his hand. On it he engraved: “Muhammad is the Messenger of Allah,” and he forbade anyone to engrave on it. It is the one that fell from Mu'aiqib into the well of Aris.”

Explanation:

Reference: Shamail al-Muhammadiyah, Stating That Rasoolullah Wore The Ring On His Right Hand, Hadith No. 98