Question: Who is Muhammad Ibn Ja'Far Al-Sadiq's paternal grandmother?
Sentence (from "Ja'far al-Sadiq"): He is considered as an Imam and founder of the Ja'fari school of jurisprudence by Twelver and Isma'ili Shi’as, and a major figure in the Hanafi and Maliki schools of Sunni jurisprudence.
Relevant evidence: No