Abdullah bin Numayr عبد الله بن نمير · The Book on Clothing

"The inscription on the ring of the Prophet (ﷺ) was in three lines: 'Muhammad' on a line, 'Messenger' on a line, and 'Allah' on a line."

"I heard 'Ali saying: 'The Messenger of Allah (ﷺ) prohibited Al-Qassi, the red Mitharah, and wearing rings on this and this.' And he pointed to the index and middle fingers." This Hadith is Hasan Sahih. Ibn Abi Musa is Abu Burdah bin Abi Musa and his name is 'Amir bin 'Abdullah bin Qais.