From his biography it is learnt that it was him who laid...
From his biography it is learnt that it was him who laid down teachings for demolishing Islam, founding an underground society for spreading his teachings, taking Islam as a shield to cover up his intentions. The most notable of his teachings were the wisayah (executorship) and Raj`ah, initiating his utterance by saying that Muhammad will return (to the earth).
His statement was thus: "It is to wonder at whoever believing Jesus will come back (from the heaven) and denying that Muhammad will come back (on Doomsday)." Then he turned to say that Ali will come back (to the earth). Ibn Hazm said: When Ali was killed, he (Ibn Saba’) said: "If you bring us his brain a thousand times, I will never believe his being dead.
He will never die till he fills the earth with justice as was filled will oppression." This idea of Raj`ah Ibn Saba' learnt from the Jewish Madhhab as it believes that the Prophet Khidr al-Yas has ascended to the heaven and will verily come back when he will restore the religion and law. The idea was also held by the Christian Madhhab during its early ages.
The abstract of speech in regard of these Jews — as said by some researchers — being that their weapon was slander, falsity, cunning, foisting perversion of speech, raising skepticism and suspicions and creating malevolence among Muslims. It became clear that murder of Umar was engineered by an underground society, that was joined by the Jew Ka'b al-Ahbar, while assassination of Uthman was partially executed through intrigues of the Jew Abd Allah ibn Saba'.
Besides, all the political seditions and fabrications of narration in the first era of Islam belong to the society of Saba'ites and associations of the Persians. I recorded this in the first edition of my book relying on what was written by eminent historians and their successors quoting it from Ibn Saba'. A valuable book under the title Abd Allah ibn Saba’.
authored by the great Iraqi scholar al-Ustadh Murtada al-Askari was published, in which he proved through convincing strong evidences that such name had no existence in truth. That is due to the fact that the first source upon which depended all the historians beginning with Tabari till the present time to prove his existence, was Sayf ibn Umar al-Tamimi (died in 170H.).
And his narrations were refuted by all the Sunnah Imams, with al-Hakim saying in his regard: He was accused with atheism (zandaqah), and he was corrupt in narration. We, to be fair toward knowledge and truth, say: Dr.