a man from Khorasan told Abal Hassan Ali ibn Musa Ar-Ridha’ (a.s.), “O son of the Prophet of God! I saw the Prophet of God (a.s.) in a dream. The Prophet (S) asked me, ‘How will you be when one of my own flesh and blood is buried in your land, you are asked to protect my trust, and my star (Ar-Ridha’ (a.s.)) disappears in your soil?” Then Ar-Ridha’ told him, “I am the one who will be buried in your land. I am a piece of the flesh and blood of your Prophet. I am the trusted one and I am the star. Know that whoever visits me recognizing my rightfulness and obeys me as God the Blessed the Sublime has made it incumbent upon him to do so - my forefathers and I will intercede on his behalf on the Resurrection Day. Whoever on whose behalf we intercede shall be saved, even if there is the heavy burden of sin of the Jinn and the men on him.In fact, my father quoted on the authority of my grandfather, on the authority of his father, on the authority of his forefathers (a.s.) that God’s Prophet (S) said, ‘Whoever visits me in his dream, it is as if he has visited me since Satan cannot appear to be like me, or appear to be like anyone of my Testamentary Trustees (the 12 Imams). Neither can Satan appear to be like any of their followers. Indeed truthful dreams are one of the seventy parts of Prophethood.’”