4-18 In another tradition it is narrated that Ahmad ibn Zayad ibn Ja’far al-Hamadani - may God be pleased with him - narrated that Ali ibn Ibrahim ibn Hashem quoted on the authority of his father, on the authority of Isma’il ibn Mar’rar and Salih ibn As-Sindi, on the authority of Yunus ibn Abdul Rahman, on the authority of Hussein ibn Bashir, “Abul Hassan Musa ibn Ja’far (s) appointed his son Ali (Al-Ridha) (s) just as God’s Prophet (s) appointed Ali (s) on the day of Ghadir Khom. He (s) said, ‘O people of Medina! This is my Testamentary Trustee after me.’’ Or said, ‘O people of the mosque! This is my Testamentary Trustee after me.’”