Question: Who is Abdullah Al-Aftah's paternal grandfather?
Sentence (from "Abdullah al-Aftah"): Abdullah al-Aftah ibn Ja'far al-Sadiq (d. 766 CE / 149 A.H.) was the eldest surviving son of Ja'far al-Sadiq (after al-Sadiq’s death) and the full-brother of Isma'il ibn Jafar.
Relevant evidence: Yes