it is said that he was a Jew who accepted Islam ... ) is about the story which was made by Sayf ibn Umar. Usually, in Islamic books, using from the term 'قيل' ( Ghila, i.e., It is said ... ) before mentioning a matter by the author, implies the belief of the author about the weakness of the saying which is mentioned after it. So, using the term 'Ghila' by Ni'matullah al-Jazaa'iree shows that he believed that the saying is weak. Famous Shia scholar Nau Bakhti writes, Muhammad Ali al-Mual'lim, a present-day Shi'ite, also affirmed the existence of Abd Allah ibn Saba' in his book Abdullah bin Saba: The Unknown Reality''. This book was a refutation of those who denied the existence of Abd Allah ibn Saba' giving the excuse of "false narrations". Modern Shia historians often cite a number of Sunni scholars who considered Sayf ibn Umar as unreliable on matters of prophetic hadith. For example, al-Dhahabi (d. 748 AH) has quoted from the book of Sayf in his History, but wrote in "al-Mughni fi al-Dhu'afa'" that: "Sayf has two books which have been unanimously abandoned by the scholars." They point out to a number of prominent Sunni scholars concur regarding his narration of hadith. including al-Hakim, Abu Dawud, al-Suyuti and al-Nisa'i. However, some modern historians have pointed out that this view of Sayf should be limited to his hadith scholarship, and thus it does not detract from his general reliablitiy as a transmitter of historical information. But this is not acceptable. Because when he used to make many fake traditions, so that logically he used to make fake tales and then narrate them as historical stories. Other sources Tabari narration on Ibn Saba' goes back to Sayf ibn Umar. There are two other historians that mentioned Ibn Saba' accounts which is said to have independent sources. However, it can be shown that their chains of isnad go back to Sayf Ibn Umar. There is a favorable Isma'ili legend that formed around the figure of Abd Allah ibn Saba'. Some early Jewish literature also exists on Ibn Saba. He was largely regarded as an apostate from Judaism. See also History of Shia Islam Ka'ab al-Ahbar Dhammiyya Shia References Citations Sources Further reading Further readings from traditional Shia sources: Tarikh Tabri, Volume 3, page 177. [Tarikh Damishq, 7:430] [Rijal-i-Kashi, page 71]. [al-Maqaalaat wal-Firaq page 20]. Tanqih al-Maqaal Fi Ilm