Well , they are product of the commander in Chief of the defeated Persian army which was defeated during the Khalifat of Abu Bakr ( RA) and Omar Farooq (RA).
Here is a brief history of this group and the historical links.....
When during mars (RA) khilafat, muslims defeated Great Persian and Roman empires., the persian commander Harmuz was brought in front of Omar ( RA) and
The defeated Persian governor and former military commander, Harmuzan, was brought before Caliph Umar. Umar said to the defeated Persian:
“Harmuzan, we Arabs are the desert-dwellers you considered too lowly for even fighting with. We used to get licked by small columns of your troops. Now you see your King’s throne and crown lying at our feet while he is running about places to save his life. How did that happen?”
Harmuzan replied:
“Sir, then it used to be a war between the Persians and the Arabs. Now you have your God with you
In other words, It was thus that Harmuzan and his Persian confederates realized that the power of the Republic of Medinah lay in its religious beliefs. To destroy the religious beliefs of the Muslims would be to destroy the Muslims.
Harmuz was forgiven by Omar ( RA) for execution, as he spilled his water which was requested by him which was the custom those days.
Harmuzan “converted” to Islam and moved to Medinah, whereupon he planned the Persian revenge on the Arab Muslims. Harmuzan blamed the Commander of the Faithful Umar for the downfall of the Persian Empire, and it was thus that Harmuzan hatched the plan to assassinate the Caliph.
In Medinah, Harmuzan became close companions with a staunch Christian named Jafeena Al-Khalil. Jafeena was a political pawn of the Roman ruler and had served as an official in Damascus, Palestine and Heerah; the defeat of Rome by the Muslims left its mark on Jafeena who–like Harmuzan–swore revenge. The third partner was a Jew by the name of Saba bin Shamoon (whose son would be Abdullah Ibn Saba, the notorious founder of the Shia movement). Saba despised the Muslims who had expelled the Jews on charges of conspiracy. All three of these individuals–Harmuzan the Zoroastrian, Jafeena the Christian, and Saba the Jew–belonged to peoples who had grievances against the rise of Muslim dominance.
They hired Feroz Abu Lulu, a Persian, who had recently been captured by the Muslims as a POW; he was a slave under a Muslim master. Abu Lulu stabbed Umar bin Khattab to death. A day before Umar had been assassinated, Abdur Rehman-–Abu Bakr’s son-–had seen Abu Lulu standing with Harmuzan and Jafeena. The three men were whispering to one another. As Abdur Rehman passed by, the three got startled and a double edged dagger fell to the ground. Abdur Rehman would later confirm that this was the same dagger that killed Umar. The murder of Umar was thus instigated by a coalition of a Roman Christian, a Jew, and a Persian Zoroastrian. It should be noted that the Prophet had prophecized that the Christians, Jews, and pagans would always be united against the Muslims.
Today, the modern day Shia venerate Abu Lulu, and they call him “Baba Shuja-e-din” which can be translated as “Honored Defender of Religion.” These Shia have a shrine erected for this murderer, located in the Iranian city of Kashan called the Abu Lulu Mausoleum wherein he is buried. The Shia travel from far distances to pray inside this shrine, and many of the Shia fast on the day that Umar was killed, and even pass out sweets. Feroz Abu Lulu is one of the venerated founding figures of Shia ideology; the same people who conspired to kill Umar were the ones who planted the seeds of the Shia movement.
Here is one more proof of this Jewish, Christian, and Zorastrian conspiracy to disfigure islam by creating shiaism.
The “Jewish Encyclopedia” says:
ABDALLAH IBN SABA
By : Hartwig Hirschfeld
A Jew of Yemen, Arabia, of the seventh century, who settled in Medina and embraced Islam. Having adversely criticized Calif Othman’s administration, he was banished from the town. Thence he went to Egypt, where he founded an antiothmanian sect, to promote the interests of Ali. On account of his learning he obtained great influence there, and formulated the doctrine that, just as every prophet had an assistant who afterward succeeded him, Mohammed’s vizier was Ali, who had therefore been kept out of the califate by deceit. Othman had no legal claim whatever to the califate; and the general dissatisfaction with his government greatly contributed to the spread of Abdallah’s teachings. Tradition relates that when Ali had assumed power, Abdallah ascribed divine honors to him by addressing him with the words, “Thou art Thou!” Thereupon Ali banished him to Madain. After Ali’s assassination Abdallah is said to have taught that Ali was not dead but alive, and had never been killed; that a part of the Deity was hidden in him; and that after a certain time he would return to fill the earth with justice. Till then the divine character of Ali was to remain hidden in the imams, who temporarily filled his place. It is easy to see that the whole idea rests on that of the Messiah in combination with the legend of Elijah the prophet. The attribution of divine honors to Ali was probably but a later development, and was fostered by the circumstance that in the Koran Allah is often styled “Al-Ali” (The Most High).
Bibliography: Shatrastani al-Milal, pp. 132 et seq. (in Haarbrücken’s translation, i. 200-201);
Weil, Gesch. der Chalifen, i. 173-174, 209, 259.H. Hir.
Source: JewishEncyclopedia,
http://www.jewishencyclopedia.com/view.jsp?artid=189&letter=A