The decisive word Regarding the suspicion in the case of Imam Al-Mahdi

And they say: "And the Arabs are a people who have been endowed with contradictory qualities, such as piety, sincerity, stubbornness, arrogance, harshness, and ignorance." Indeed, most of the Arabs were from the nomadic tribes who lived in extreme poverty before Islam. When Islam came to them, their nomadic life did not increase their hardship. Rather, they clung to their nomadic life with its harshness and the difficulty of living in it. Islam came to them with strength, despite the fragmentation and the spread of ignorance and distance from knowledge. So, a believing, stubborn soul was formed, constricted in its thinking, ignorant and impulsive because it came from the desert and was arrogant because it did not know. For the soul does not deviate if it finds a true belief and a correct path. It deviates from worldly desires and the pleasures of life, and turns towards the hereafter. And this harsh life, with its suffering, drove them towards harshness, power, and aggression. The soul is a mirror that reflects. And because they lived a harsh life, this was reflected in their violence, their stubbornness, and the severity of their harshness.

Then the tribe of Rabīʿah revolted from these eras. Their extremism appeared in the form of the Umayyad state. And this group mixed with the most extreme of the sects and the strongest of the supporters. It mixed with their being, so it spread among the Arabs. In it, the event of Hiyāf al-ʿUtaibī was known, and a strong Mudarite, Hiyāf, and his stubbornness, his extreme stubbornness. He is from the latest to embrace Islam and is capable of deception. And among them are Qudāʿah and Qaḥṭān. The Arabs of the Arabs were from two branches: The first branch: Hiyāf and his descendants, who did not spread narrations about the end of time, the approaching of the end, and the desire for martyrdom for the Imam Al-Mahdi, may God bless him. And the descendants of this school are still marked on the foreheads of the descendants of the true Imam Al-Mahdi movement.

The second branch: The strong tribe of Rabīʿah, the family of Saʿd. They cooperated with the movement of Hiyāf, considering it an opportunity to achieve their desires with this group, without any regard for the sanctity of blood. It was possible to cooperate with them in a way that would achieve the goals of Hiyāf and the Arabs of the Arabs. So the family of Saʿd turned towards Rabīʿah, and they are a pure lineage of liars, a people whose people are tired of them. They do not leave them with blessings.

Islamic sects, page 61.