I said to al-Rida عليه السلام: O the son of the messenger of Allah inform me about Zurara – did he know of the right of your father [al-Kadhim to be the Imam]? He عليه السلام said: yes he did. I said: then why did he send his son Ubayd to investigate the question of the succession to al-Sadiq Ja`far b. Muhammad? He said: Zurara knew of the affair of my father [his Imama] and the designation of his father [al-Sadiq] to him, he only sent his son to know from my father [al-Kadhim] whether it was permitted for him to lift the Taqiyya in announcing the affair [Imama] and the designation of his father to him. When the answer delayed he was asked to declare his opinion about my father but he did not wish to proceed in doing so without his instruction so he raised the Mushaf and said: O Allah my Imam is the one whose Imama this Mushaf establishes among the sons of Ja`far b. Muhammad عليهما السلام