Foretelling

I (i.e.Musafir) was with Imam Abul-Hasan al-Reza(A.S.), at Mina. Al-Fadl b.Yahya b. Khalid Barmaki passed by and covered his face (to escape) from the dust.
Imam Reza(A.S.), said: "Wretched ones who do not know what will happen to them during this year!" Then he added: "The most surprising thing will be what happens to Harun(the Abbasid caliph). The two of them i.e. al-fadl b. Yahya b. Khalid and Harun will be like these two. "Then he joined his two fingers together. [Musafir reported:]
By God, I did not understand the meaning of his statement until we buried Harun together with al-Fadl.