(47) باب صِفَةِ خَاتَمِ النَّبِيِّ صلى الله عليه وسلم
It was narrated that Anas bin Malik said:
"The Messenger of Allah [SAW] had a ring of silver which he wore on his right hand. It had an Ethiopian stone (Fass), and he used to wear the stone (Fass) next to his palm."
Reference: Sunan an-Nasa'i 5197
In-book reference: Book 48, Hadith 158
English translation: Vol. 6, Book 48, Hadith 5200