Columbia subject headings:
Economics--Religious aspects--Islam.
Taxation (Islamic law)
Zakat.
Harvard subject headings:
Economics--Religious aspects--Islam
Islam--Economic aspects
Zakat
Zakat--Economic aspects--Egypt.
Zakat--Social aspects--Egypt.
Princeton subject headings:
Economics--Religious aspects--Islam.
Islam--Economic aspects.
Zakat--Economic aspects--Egypt.
Zakat--Social aspects--Egypt.
Zakat.