varied to an extraordinary degree: they include works on tafsir and its related sciences; on hadith and its disciplines; on hadith commentaries and the jurisprudence extracted from them; on tawhid and creed; on the study of sects, religions, and denominations; on refuting the Jahmiyyah; on the writings of philosophers and logicians, as well as refutations of them; on language and the unusual vocabulary found in hadith; on the jurisprudence of the four canonical madhhabs and their legal principles; on the jurisprudence of other schools; on etiquette and spiritual conduct; on history; and on general topics.