Columbia subject headings:
Economics--Religious aspects--Islam.
Islam--Economic aspects.
Islam--Social aspects.
Social security--Islamic countries.
Zakat.
Harvard subject headings:
Economics--Religious aspects--Islam
Islam--Economic aspects
Islam--Social aspects
Social security--Islamic countries.
Zakat.
Princeton subject headings:
Economics--Religious aspects--Islam.
Islam--Economic aspects.
Islam--Social aspects.
Social security--Islamic countries.
Zakat.