Complex sentence: Atharis believe that the literal, apparent, or zahir meaning of the Qur'an and the hadith have sole authority in matters of belief and law; and that the use of rational disputation is forbidden even if it verifies the truth.
Split into simpler sentences: Atharis believe that the literal, apparent or zahir meaning of the Qur'an and the hadith as sole authority in matters of belief and law. The use of rational disputation is forbidden even if it verifies the truth.