Hadith

O Ali, do not wear a ring in the forefinger or the middle finger. People of Lot the prophet (peace be upon him)¹ used to wear their rings in those two fingers. You should never disrobe the pinkie (A ring should always be in your pinkie).
1 People of Sodom (a town in ancient Palestine, probably south of the Dead Sea, destroyed by fire from heaven, for the wickedness of its inhabitants) in the time of Lot the prophet (peace be upon him).

Prophet Muhammed (saws)

1: People of Sodom (a town in ancient Palestine, probably south of the Dead Sea, destroyed by fire from heaven, for the wickedness of its inhabitants) in the time of Lot the prophet (peace be upon him).