Da'a'im al-Islam
Da'a'im al-Islam is an Ismaili Shia Islam Muslim book of jurisprudence.
The book was written by Al-Qadi al-Nu'man. He served as da'i of four imams. The book emphasizes what importance Islam has given to manners and etiquette along with Ibadah, the worship of God, citing references of first four Fatimid imams and earlier Shia imams, Muhammad al-Baqir and Jafar-as-Sadiq.
Subsequent Fatimid imams and caliphs and Ismaili dai's have relied on Da'a'im-ul-Islam'. The 16th Fatimid imam - Caliph Al-Hakim bi-Amr Allah ordered his da'i, Harun bin Mohammed in Yemen, to give decisions in light of Da'a'im al-Islam only.
