Sufism 139 Islam 111 Doctrines 33 Judaism 33 Religious life 33 Mysticism 20 Relations 16 Customs and practices 15 Early works to 1800 15 History 15 Religious aspects 10 Christianity 7 Biography 6 God (Islam) 6 Early 5 Islamic ethics 5 Jews 5 works to 1800 5 Autism in children 4 Juvenile literature 4 Politics and government 4 Sufis 4 World War, 1939-1945 4 Worship (Islam) 4 Zionism and Judaism 4 Autism 3 Autistic children 3 Comparative studies 3 Creation (Islam) 3 Faith (Islam) 3