Imam Abdullah quotes his father, Imam Ahmad ibn Hanbal, regarding his belief in innovations that appeared among the deviant groups that appeared in his era or before his era, such as the Jahmites, Mu’tazilites, and Khawarij, and his ruling on them: are they infidels or Muslims? The book is full of the sayings of the Imam of the Sunnis, narrated by his son Abdullah on his authority.