Praise be to Allah.
al-Hajjaaj ibn Yoosuf ath-Thaqafi was the governor of Iraq for the caliph ‘Abd al-Malik ibn Marwaan. He was known for oppression and bloodshed, showing disrespect to the early generations [the Sahaabah and Taabi‘een] and transgressing all the sacred limits of Allah for the slightest reason. The historians and biographers are unanimously agreed that he was one of the worst oppressors and the quickest to shed to kill people unlawfully.
He did not show respect to the Messenger of Allah (blessings and peace of Allah be upon him) in the way he treated his companions, and he showed no respect to the Prophet’s instructions to show kindness and respect to the scholars and people of virtue and righteousness among the followers of his companions. He was a vile Naasibi who hated ‘Ali ibn Abi Taalib (may Allah be pleased with him) and his family.
Ibn Katheer (may Allah have mercy on him) said:
He was a Naasibi who hated ‘Ali and his supporters so as to appease the family of Marwaan, namely Banu Umayyah. He was a stubborn tyrant, always ready to shed innocent blood for the slightest reason.
Some ugly and abhorrent words were narrated from him, the apparent meaning of which sounds like disbelief (kufr). If he had repented from that and given it up, that would have been counted in his favour, otherwise he is responsible for what he said. But there is the fear that these reports may have been inaccurate, with things added to what he said, because the Shi‘ah hated him intensely for many reasons, and they may have distorted some of his words and added to what they narrated from him some abhorrent and ugly words.” (Al-Bidaayah wa’n-Nihaayah 9/153).
It was narrated from Asma’ bint Abi Bakr (may Allah be pleased with her) that she said to al-Hajjaaj: The Messenger of Allah (blessings and peace of Allah be upon him) told us that among Thaqeef there would be a liar and a shedder of blood. As for the liar, we have seen him; as for the shedder of blood, I do not think but that you are he.
The shedder of blood is the one who goes to extremes in killing people.
From an early age al-Hajjaaj was known to be intelligent, well-spoken and eloquent, and a hafiz of Qur’an. Some of the early generations said: al-Hajjaaj used to recite the entire Qur’an every night. Abu ‘Amr ibn al-‘Ala’ said: I have never seen anyone more eloquent [in Arabic] than him and al-Hasan al-Basri, but al-Hasan was more eloquent than him.
‘Uqbah ibn ‘Aamir said: I think that in terms of intelligence, people are close to one another, except al-Hajjaaj and Iyaas ibn Mu‘aawiyah, for their intelligence stood out in comparison to other people.” (Al-Bidaayah wa’n-Nihaayah 9/138-139).
Ibn Katheer said:
It was narrated to us that he was a religious person with regard to keeping away from intoxicants. He recited Qur’an a great deal and avoided other sins. It was not known that he ever committed fornication; however, he would not hesitate to shed the blood of innocent people. Allah, may He be exalted, knows best what is true and how matters really were, what is hidden of such matters and what is concealed in people’s hearts.