Columbia subject headings:
ʻAbd Allāh ibn Sabaʼ, active 7th century.
Harvard subject headings:
Islamic Empire--History--622-661.
Shīʻah--Doctrines
Shīʻah--History.
ʻAbd Allāh ibn Sabaʼ, active 7th century--Criticism and interpretation.
Princeton subject headings:
ʻAbd Allāh ibn Sabaʼ, active 7th century.