Al-Radd 'ala Ashab al-Hawa (), better known as al-Sawad al-A'zam 'ala Madhhab al-Imam al-A'zam Abi Hanifa (, ), is a book written by al-Hakim al-Samarqandi, and is considered as the oldest theological work in accordance with the Maturidite school, after Kitab al-Tawhid (The Book of Monotheism) by Abu Mansur al-Maturidi.