Columbia subject headings:
Fasts and feasts--Islam--Early works to 1800.
Islam--Customs and practices--Early works to 1800.
Laylat al-Qadr--Early works to 1800.
Prayer--Islam--Early works to 1800.
Harvard subject headings:
Laylat al-Qadr--Early works to 1800.
Princeton subject headings:
Fasts and feasts--Islam--Early works to 1800.
Islam--Customs and practices--Early works to 1800.
Laylat al-Qadr--Early works to 1800.
Prayer--Islam--Early works to 1800.