Columbia subject headings:
Khālid ibn Saʻīd, -635 or 636.
Muslims--Saudi Arabia--Biography.
Muḥammad, Prophet, -632--Companions.
Harvard subject headings:
Khālid ibn Saʻīd, -635 or 636.
Muḥammad, Prophet, -632--Companions.
Muslims--Saudi Arabia--Biography
Princeton subject headings:
Khālid ibn Saʻīd, -635 or 636.