Columbia subject headings:
Muḥammad, Prophet, -632--Companions.
Qurʼan--Criticism, interpretation, etc.
Harvard subject headings:
Muḥammad, Prophet, -632--Companions.
Qurʼan--Criticism, interpretation, etc.
Princeton subject headings:
Muḥammad, Prophet, -632--Friends and associates--Biography.
Qurʼan--Criticism, interpretation, etc.