Columbia subject headings:
ʻAlī al-Riḍā ibn Mūsá, -818 or 819--Quotations.
Harvard subject headings:
ʻAlī al-Riḍā ibn Mūsá, -818 or 819--Quotations.
Princeton subject headings:
Shīʻah--Doctrines.
ʻAlī al-Riḍā ibn Mūsá, -818 or 819--Hadith.