Introducing an Unknown Biography of the Prophet in Motamem al Siar fi Fazilateh Khair al Bashar

One of the prophetic biographers is Abdul Aziz, nicknamed Mohy Al-Hesari, who lived at the beginning of the ninth century and is not mentioned in any of the references. He is the author of the historical book Motamem al-siar fi Fazilateh Khair Albashar. The author, in addition to describing the outward and spiritual attributes of the Prophet, has accurately described the events of the beginning of Islam from the first year until the caliphate of Imam Ali. In this regard, the present study aims to investigate the biography of the Prophet in this work. In the introduction, Mohy Al-Hesari states that he wrote his work in twelve days, so the book is divided into twelve chapters. Each chapter contains an Arabic sermon and its Persian translation. A copy of this work is kept in Nour Othman Library No. 2854. The findings of the present study indicate that this work is important in terms of the subject matter as well as lexical features and lexical information. It is also an interpretive, historical, moral, and doctrinal work that has been cited in various sources along with their critiques. The antiquity of the work and its uniqueness have also added to its importance.