41. We were told by Muhammed bin Hasan bin Ahmad bin Waleed, may Allah grant him mercy, that he said: We were told by Muhammed bin Hasan al-Saffar, that he said: We were told by Ahmad bin Muhammed bin Isa, from Hussain bin Sa’eed, from Ibn Abi ‘Umayr, from Hammad bin Uthman, from Hafs al-Kinasi, that he said: I said to Abu Abdillah, peace be upon him: What is the least by which a servant is (considered to be a) believer? He said: That he testifies that there is no god but Allah, and that Muhammed is His Servant and Messenger, and that he acknowledges obedience and knows the Imam of his era. If he does that, he is a believer.