Columbia subject headings:
Qurʼan--Criticism, interpretation, etc.
Qurʼan--Language, style.
Sufism--Doctrines.
Sufism--Terminology.
Harvard subject headings:
Qurʼan--Criticism, interpretation, etc.
Qurʼan--Language, style.
Sufism--Doctrines
Sufism--Terminology.
Princeton subject headings:
Islam--Doctrines.
Mysticism--Islam.
Qurʼan--Criticism, interpretation, etc.
Qurʼan--Hermeneutics.
Spiritual life--Islam.
Sufism.