Columbia subject headings:
Harvard subject headings:
Hadith--Criticism, interpretation, etc.--Early works to 1800.
Islam--Customs and practices--Early works to 1800.
Prayer--Islam--Early works to 1800.
Ramadan--Early works to 1800.
Princeton subject headings:
Hadith--Early works to 1800.
Islam--Customs and practices--Early works to 1800.
Prayer--Islam--Early works to 1800.