"The Messenger of Allah forbade me to wear (a ring) on this finger," and it was on the middle finger and the one next to it.
Sunan an-Nasa'i Book 48, Hadith 248
← Previous Hadith "I heard 'Ali say: 'The Prophet of Allah forbade me to wear a ring on the forefinger and middle finger.'"

Sunan an-Nasa'i Book 48, Hadith 247 Next Hadith → "The Prophet wore a ring of gold, then he discarded it and wore a ring of silver on which were engraved (the words) 'Muhammad Rasul Allah.' Then he said: 'No one should copy this inscription of mine.' And he wore the stone (Fass) toward his palm."

Sunan an-Nasa'i Book 48, Hadith 249