Muhammad ibn Abd Allah al-Aftah ibn Ja'far al-Sadiq was a figure whose existence is contested: a portion of the Fathite Shia Muslims, believed that Muhammad was the son of Imam Abdullah al-Aftah, whom they believed to be the Imam after his father Ja'far al-Sadiq. This assertion is contested by others, including many Fathites, who believe that Abdullah died without issue.