Sufism Islam 83 Islam -- 81 Doctrines 76 Religious life -- 44 Islamic ethics 33 Sufism -- 31 more ... Customs and practices 15 Islamic philosophy 11 Mysticism -- 10 Religious aspects -- 8 History 7 God (Islam) 6 Islamic sects 6 Early works to 1800 5 Islamic law 5 Repentance -- 4 Spiritual life -- 4 Arabic 3 Biography 3 Conduct of life 3 Essence, genius, nature 3 Hanbalites 3 Heart -- 3 Metaphysics 3 Muslims -- 3 Mysticism 3 Nurculuk -- 3 Qur'an -- 3 Soul (Islam) 3 less ...