Columbia subject headings:
Harvard subject headings:
Economics--Religious aspects--Islam
Finance, Public--Islamic Empire
Islam--Economic aspects
Islamic Empire--Economic policy.
Islamic Empire--Politics and government.
ʻAlī ibn Abī Ṭālib, Caliph, approximately 600-661--Knowledge--Finance, Public.
Princeton subject headings:
Economics--Religious aspects--Islam.
Islam--Economic aspects.
Islamic Empire--Economic policy.
Islamic Empire--History--622-661.
ʻAlī ibn Abī Ṭālib, Caliph, approximately 600-661.