Doctrines Islam 524 Customs and practices 102 Religious life 84 Faith (Islam) 81 God (Islam) 38 Sufism 29 Religious aspects 24 Islamic law 21 Conduct of life 19 Islam and state 19 Pillars of Islam 17 Muslims 14 Islamic ethics 13 Early works to 1800 12 Islamic sects 12 Koran 12 Shi'ah 12 Hadith 10 Interpretation and construction 10 Death 9 History 9 Ummah (Islam) 8 Criticism, interpretation, etc 7 Eschatology, Islamic 7 Islam and social problems 7 Kufr (Islam) 7 Islam and reason 6 Study and teaching 6 Theology 6