It was narrated that Ibn Umar said: "The Prophet (صلی اللہ علیہ وسلم) used to wear a ring of gold, then he discarded it, and put on a ring of silver on which was engraved (the words): Muhammad Rasul Allah. He said: No one else should engrave his ring with an inscription like this ring of mine. Then he put the stone toward the palm of his hand.