Sunan an-Nasa'i 5277
سنن النسائي#5277SahihIt was narrated from Anas that :The Prophet [SAW] put on a silver ring with and Ethiopian stone (Fass), on which the inscription was: "Muhammad Rasul Allah
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Abu GhuddahSahih
Al-AlbaniSahih
Zubair Ali ZaiHasan
In-book reference: 48:238