It is narrated from Sayyiduna Ma'qil bin Yasar (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Act upon the Book of Allah and do not deny anything in it. Whatever of it seems unclear to you, ask the people of knowledge about it and they will inform you. Believe in the Torah and the Injil, and believe in the Furqan (the Qur'an), for in it is the explanation of everything. It is an intercessor whose intercession will be accepted, and an advocate whose word will be believed (before Allah)."

It is narrated from Sayyiduna Ma'qil bin Yasar (may Allah be pleased with him) that Sayyiduna Umar bin al-Khattab (may Allah be pleased with him) consulted al-Hurmuzan about the campaigns of Isfahan, Fars and Azerbaijan. He said: O Commander of the Believers! Isfahan is like the head (in the body of Persia). Mention of Sayyiduna Abdullah bin Mughaffal al-Muzani (may Allah be pleased with him).