Columbia subject headings:
Abū Ayyūb al-Anṣārī, Khālid ibn Zayd, -approximately 672.
Muḥammad, Prophet, -632--Companions--Biography.
Harvard subject headings:
Abū Ayyūb al-Anṣārī, Khālid ibn Zayd, -approximately 672.
Muḥammad, Prophet, -632--Companions--Biography.
Princeton subject headings:
Abū Ayyūb al-Anṣārī, Khālid ibn Zayd, -approximately 672.
Muḥammad, Prophet, -632--Friends and associates--Biography.