Columbia subject headings:
Islamic law--Early works to 1800.
Shiites--Early works to 1800.
Harvard subject headings:
Islamic law--Early works to 1800.
Shiites--Early works to 1800
Princeton subject headings:
Islam--Prayers and devotions.
Islam--Rituals.
Islamic law--Early works to 1800.
Prayer--Islam--Early works to 1800.