Fatahiyya''' or ''' Aftahiyya''' were believers in the [[imamate]] of [['Abd Allah al-Aftah|'Abd Allah]], son of [[Imam Ja'far al-Sadiq (a)]], known as ''' Aftah'''. After the [[martyrdom]] of the sixth Imam of [[Shi'a]] (a), his elder son, 'Abd Allah claimed his succession. Mentioning this quote from his father that "imamate of every Imam (a) reaches his elder son"; 'Abd Allah gathered some people around himself.
His claim did not last long and he died 72 days after the martyrdom of Imam al-Sadiq (a); and since he did not have any son or successor, his followers were left without leader and most of them turned to [[Imam al-Kazim (a)]] and the mentioned belief ended very soon. Some great figures of [[Imamiyya]] such as [[Banu Faddal]] turned to 'Abd Allah first, but many of them returned either from halfway or after he died.
== Cause of Naming ==
The cause of naming this group as
Fathiyya has been mentioned to be one of the following:
'Abd Allah's title as Aftah due to having a large head (aftah al-ra's) or large feet (aftah al-rijlayn).
Some others consider the leadership of another person called 'Abd Allah b. Fatih from [[Kufa]] for this movement as the reason for calling this sect
== Destiny of 'Abd Allah Aftah ==
'Abd Allah died 70 days after the martyrdom of Imam al-Sadiq (a) and left no children. Therefore, the belief in the imamate of 'Abd Allah Aftah ended and most of his followers turned to believe in the imamate of Imam al-Kazim (a).
Fathiyya Famous Figures ==
At the beginning of the claim of 'Abd Allah, many great companions of Imam al-Sadiq (a) accepted his claim and considered him the true successor of Imam (a), the most famous of whom were:
*[[Ahmad b.al-Hasan b. Ali b. Fadal]]
Based on historical evidences, many of these people returned from their belief in 'Abd Allah Aftah and there are no evidence whether others returned from that belief or not; however, it can be understood from [[rijal]] sources that all the mentioned people, despite their beliefs, were among reliable transmitters of hadiths who were trustworthy before Imams (a) and the [[Shi'a]] scholars. For example, [[Imam al-'Askari (a)]] was asked about the validity of [[hadith]]s transmitted by Banu Faddal who was a follower of
Fathiyya, and he (a) answered,
:"Act according to their hadiths, but leave their beliefs."
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