On What Ar-Ridha عليه السلام Wrote for Al-Ma’mun Regarding Pure Islam and the Religious Decrees

35-16 Muhammad ibn Ahmad ibn Al-Husayn ibn Yusuf al-Baghdadi narrated that Ali ibn Muhammad ibn Anbasa quoted on the authority of Al-Husayn ibn Muhammad al-Alawi at Johfa that Ali ibn Musa Ar-Ridha’ عليه السلام quoted on the authority of his father عليه السلام, on the authority of his forefathers عليه السلام, on the authority of Ali ibn Abi Talib عليه السلام, “God’s Prophet صلى الله عليه وعلى آله وسلم came to us having an agate ring from Yemen on his finger. He عليه السلام prayed with us. When he finished praying, he gave it to me and said, ‘O Ali! Pray while wearing this. Don’t you know that praying with an agate ring (on one’s finger) has the reward of seventy prayers? The agate recites glorifications, repents and its reward will be given to its owner. Piety is due to God and by Him we may succeed.’”