As difficult as this mission might be, Allah the Almighty saved for Egypt, at that time, two great values, which made the mission of Qutuz, May Allah have mercy upon him, relatively easy:

The first was the value of the Sharee‘ah sciences and religious scholars. Since Saladin established the Sunni school in Egypt, after putting an end to the corrupt Fatimid State, and during the Ayyubid State, the value of scholars was raised in the sight of both the people and the rulers, to the extent that when Shajarat Ad-Durr acceded to the throne of Egypt, and the scholars disapproved of this behavior and continued writing their messages against the queen and motivated the people to deny that, neither Shajarat Ad-Durr nor any of her assistants were able to stop that daring movement of the scholars. No restriction nor detention was imposed on a scholar, nor was any scholar prevented from giving his lessons and Khutbahs. One of the outcomes of the upbringing given by the Ayyubids to the Mamluks on the religion before horsemanship and fighting was that the rulers were in continuous need of the scholars. The religious upbringing of the Mamluks had a positive impact on them that made them honor religious knowledge and scholars. If a man stood to tell that Allah the Almighty says so-and-so, or the Messenger of Allaah, sallallaahu ‘alayhi wa sallam, said so-and-so, both the rulers and the public would listen to him attentively.

How far are a people who, though they have kept away from religion, still have high esteem for both the religion and scholars, from a people who have been brought up on considering the religion an old tradition which should be honored symbolically just like any historical monument!
During the era of both the Ayyubids and the Mamluks, it was impossible for anyone to ridicule a religious scholar, a Shaykh in a mosque, a Sharee‘ah marriage officer, or any man of Islamic character. It was also impossible for the people to reject any Islamic principle or Sharee‘ah-stipulated law. It is true that they might commit violations, especially during the times of weakness of will and adherence to inclinations, but they always knew that those were violations; and no one ever came to tell them that such prohibited things as Riba, wine, dancing, amusement, licentiousness and loyalty to the Christians became lawful; and no one ever came to make unlawful for them any lawful thing in form and content.
Religious seminars never stopped in the mosques nor were any of the scholars prevented from ascending the pulpits nor was the word confiscated nor was the advice ignored.

The people used to honor religion, and love Islam.
For the sake of this high value of religious knowledge and scholars in Egypt, it became a refuge for the scholars who did not find, in their countries, an opportunity to instruct the people, or those who encountered resistance from their rulers for some reason. In addition to the scholars of Egypt and the noble Azhar, which became completely Sunni after the termination of the Fatimid State, Egypt received virtuous scholars from different Islamic countries, who, undoubtedly, made glorious contributions in the movement of knowledge in Egypt.
The most important of those was the pious Shaykh, the outstanding scholar and the glorious Imaam, Al-‘Izz ibn ‘Abdul-Salaam, May Allah have mercy upon him, who was known as the "Sultan of Scholars".
Here, let us have a reflective pause with this glorious scholar.

https://en.islamstory.com/index.php/en/artical/20802/egypt-gifted