Columbia subject headings:
Harvard subject headings:
Diplomatic and consular service, Islamic Empire.
Islamic Empire--Foreign relations.
Islamic Empire--History--Sources.
Muḥammad, Prophet, -632--Prophetic office.
Princeton subject headings:
Diplomatic and consular service, Islamic Empire.
Islamic Empire--Foreign relations.
Islamic Empire--History--Sources.
Muḥammad, Prophet, -632--Political activity.
Muḥammad, Prophet, -632--Prophetic office.