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Muhammad ibn Abdullah al-Aftah ibn Ja'far al-Sadiq alias Maymūn Al-Qaddāḥ was a figure whose existence is contested: a portion of the Fathite Shia Muslims (followers of Abdullah al-Aftah ibn Ja'far al-Sadiq), believed that Muhammad was the son of Imam Abdullah al-Aftah (died 766 CE), 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.