Kitab al-Tawhid, one of the fundamental books of the Maturidiyya, the orthodox Sunnite school of theology, by Hanafite theologian Abu Mansur al-Maturidi (d. 333/944), was critically edited by Bekir Topaloğlu and Muhammed Aruçi and published twice by İSAM Publications (2000 and 2003). The third impression was made in Beirut in 2007. Filling up an important gap for researchers regarding the fields of Islamic creed (‘aqa’id) and Muslim theology (kalâm), this book is awarded with the 16^th World Prize for “the Book of the Year” in the field of Islamic studies by the Ministry of Culture and Islamic Guidance (Wazarat-i Farhang wa Irshad-i Islami) of the Islamic Republic of Iran in 2008. The editors of the book, Bekir Topaloğlu and Muhammed Aruçi, are invited by the Ministry of Culture and Islamic Guidance to Iran on this occasion. In the convention organized in February 7, 2009, the prize of “the Book of the year” in Muslim theology was granted to the winners by the President Mahmud Ahmadinejad.