Islam 44 Religious life -- Sufism Islam -- 21 Doctrines 15 Islamic ethics 9 Customs and practices 6 more ... Early works to 1800 3 Repentance -- 3 Sufism -- 3 Conduct of life 2 Forgiveness of sin (Islam) 2 Muslims -- 2 Islamic philosophy 1 Man (Islam) 1 Mysticism -- 1 Soul (Islam) 1 doctrines 1 less ...