Mukhtasar Muslim

It is narrated from Sayyiduna Anas bin Malik (may Allah be pleased with him) that the Noble Prophet (peace and blessings of Allah be upon him) had a ring made of silver and had engraved on it "Muhammad Rasul Allah" (peace and blessings of Allah be upon him). He said to the people: I have had a ring made of silver and have had engraved on it "Muhammad Rasul Allah", so no one should engrave this inscription on his ring.