Columbia subject headings:
Soul (Islam)--Early works to 1800.
Sufism--Early works to 1800.
Harvard subject headings:
Muslims--Spain--Biography--Early works to 1800.
Sufis--Biography--Early works to 1800
Sufism--Early works to 1800
Princeton subject headings:
Muslims--Spain--Biography--Early works to 1800.
Sufis--Biography--Early works to 1800.
Sufism--Early works to 1800.