In his introduction to the novel, al-Shaykh al-Saduq says he met one of his friends when he was in Ilaq (a area close to Balkh), and one day the friend listed a book compiled by Muhammad b. Zakariyya al-Razi entitled Kitab man la yahduruhu al-Tabib (The book for the one who does not have a doctor before him) which is detailed, although thin. So he asked me to compile a lawful and unlawful jurisprudence book for him... which includes everything Ive written about jurisprudence... and to call the book Kitab man la yahduruh al-faqih so that, when appropriate, he may refer to it as a trustworthy book and act upon it. The book is therefore primarily concerned with jurisprudence and includes hadiths that are lawful and unlawful. Since he intended to compile this book as a reference book to assist ordinary Shia Muslims in the practice of Islams legal requirements, he found them right since al-Saduq listed hadiths. In introducing the novel, he says: I did not have the normal intention of compilers (of Hadith books) to put forward everything they (could) narrate, but my intention was to put forward those things from which I issue fatwa and which I am sure of their attribution to the Prophet (s) and Imams (a). In fact, the work is a definitive compilation of all the hadiths gathered by al-Shaykh al-Saduq and included in individual books on specific subjects of fiqh.