Sahih Muslim Hadith 5482 – The Prophet (r

English

[5482] 58 – ( … ) It was narrated from Anas that the Prophet wanted to send a letter to Chosroes, Caesar and the Negus, and it was said: "They do not accept any letter without a seal." So the Messenger of Allah had a ring made of silver, on which was engraved: 'Muhammad Rasâl Allah'. Chapter 14. Discarding Rings