Columbia subject headings:
Harvard subject headings:
Muḥammad, Prophet, -632--Companions.
Shīʻah--Relations--Sunnites.
Shīʻah--Controversial literature.
Sunnites--Relations--Shīʻah.
Princeton subject headings:
Muḥammad, Prophet, -632--Companions.
Shīʻah--Controversial literature.
Shīʻah--Relations--Sunnites.
Sunnites--Relations--Shīʻah.