The Messenger of Allah ﷺ had a ring made of gold, and he used to wear it with the stone turned toward the inside of his palm. So the people had rings made for themselves as well. Then he sat upon the pulpit, removed it, and said, "I used to wear this ring with its stone facing inward." He threw it aside and said, "By Allah, I will never wear it again." So the people discarded their rings as well.
حدثنا قتيبة حدثنا الليث عن نافع
أن رسول الله ﷺ اصطنع خاتما من ذهب وكان يلبسه فيجعل فصه في باطن كفه فصنع الناس خواتيم ثم إنه جلس على المنبر فنزعه فقال إني كنت ألبس هذا الخاتم وأجعل فصه من داخل فرمى به ثم قال والله لا ألبسه أبدا فنبذ الناس خواتيمهم