: Written by Al-Qadi al-Nu'man (d. 974 CE), the chief justice of the Fatimid state, under the direction of Imam al-Mu'izz.

As of now, a complete, officially verified is not widely distributed for free due to copyright and publishing rights. However, key resources include:

You may find digitized versions of older translations or study guides by searching for "Da'at al-Islam" or "Pillars of Islam Nu'man."