Sufism 387 Islam 153 Doctrines 49 Mysticism 45 Early works to 1800 43 Religious life 37 Religious aspects 17 Customs and practices 15 History 15 Muslim saints 12 Biography 11 Soul (Islam) 10 God (Islam) 9 Islamic ethics 9 Sufis 9 Criticism, interpretation, etc 8 Ulama 7 Asceticism 6 Spiritual healing 5 Conduct of life 4 Creative ability 4 Hadith 4 Heart 4 Islam and politics 4 Islamic sermons, Indonesian 4 Mevleviyeh 4 Muslims 4 Philosophy, Islamic 4 Religious practice 4 Collected works 3