Columbia subject headings:
Harvard subject headings:
Alids--Biography.
Imams (Shiites)--Biography.
Mahdī, Muḥammad ibn al-Ḥasan, 869-
ʻAlī al-Hādī, 828?-868.
ʻAskarī, al-Ḥasan ibn ʻAlī, -874.
Princeton subject headings:
Alids--Biography.
Imams (Shiites)--Biography.
Mahdī, Muḥammad ibn al-Ḥasan, 869-
Muḥammad, Prophet, -632--Family.
ʻAlī al-Hādī, 828?-868.
ʻAskarī, al-Ḥasan ibn ʻAbd Allāh, 906-993.