Sufism Islam 151 Doctrines 47 Mysticism 45 Early works to 1800 43 Religious life 35 Religious aspects 17 Customs and practices 15 History 14 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 Islamic sermons, Indonesian 4 Mevleviyeh 4 Muslims 4 Philosophy, Islamic 4 Religious practice 4 Collected works 3 Commentaries 3