A-5.1: Religious Sciences

(Nawawi) The second category (in of Sacred Knowledge) is what is communally obligatory (fard al-kifaya, def:c-3.2), namely the attainment of those Sacred Sciences which people cannot do without in practicing their religion, such as memorizing the Koran and hadith, their ancillary disciplines, methodological principles, Sacred Law, grammar, lexicology, declension, knowledge of hadith transmitters, and of scholarly consensus (ijma'. def:b-7) and nonconsensus.