4-7 In another tradition it is narrated that (The author of the book narrated) my father - may God be pleased with him - narrated that Sa’d ibn Abdullah quoted on the authority of Ahmad ibn Muhammad ibn Isa, on the authority of Abdullah ibn Muhammad al-Haj’jal, on the authorityof Muhammad ibn Sinan, on the authority of Dawood al-Raq’qi that he asked Abi Ibrahim Musa ibn Ja’far (s), “May I be your ransom! I have become old. Then tell me who will be the Divine Leader (Imam) after you?” Dawood al-Riqqi then continued, “The Imam (s) pointed at Abul Hassan Al-Ridha (s) and said, ‘He is the possessor of authority over you after me.’”