(9) Muhammad bin Ya’qoob narrated from Muhammad bin Yahya from Ahmad bin Muhammad from Muhammad bin Issma’eel from Mansoor bin Younus that Muhammad bin Muslim had said: I said to Abu Abdullah as-Sadiq that someone had said to me: “Know the last one of the imams and it does not harm you if you have not known the first one of them.” Imam as-Sadiq said: “May Allah damn him! I hate him although I do not know him. Has the last one of them been known except by knowing the first one?”