1.) There is no basis for forcing or pressuring others to enter Islam. It is even forbidden to slander a Christian or another non-Muslim. Ibn Nujaim, one of the greatest scholars of fiqh and uṣūl al-fiqh in the Hanafi school, said that it is haram, forbidden, to say to a non-Muslim: “you kāfir,” because it upsets him, and you are not supposed to upset him by pointing out his difference in beliefs.
This has been established in Islam for centuries. This is why I said that the concept of “tolerance” is alien to us, because tolerance means “bearing up with difficulty,” i.e. doing a favor to the other. It is derived from the Latin verb tolerare which means “to endure pain.” The Muslim relationship toward other sects was not based in “doing the favor” of tolerating them; they considered their separate beliefs as their right.
Explanation by Sh. Muhammad al-Yaqoubi, all of it.
2.) More on the treatment of sects from the same interview:
So from these proofs, these portions of hadith tradition, among others, scholars and Muslim jurists went on to say that all non-Muslim sects are annexed to the People of the Book.
Let me state it clearly: Muslims were not keen on killing people. Muslims tried to save the lives of people under any pretext when any proof was available. They valued human life as God’s creation, so when they found these clear proofs from among the words of the Prophet ( sallAllahu `aleihi wa sallam), they knew that Islam was a religion of mercy, because this is the higher purpose of the shariʿa: mercy—not killing people, not harshness, not savagery.
This was the practiced pattern when Muslims had power. Today Muslims are weak, and a group like al-Nusra thinks that it can survive and become a superpower? This is ridiculous. Muslims were superpowers and controlled two thirds of the world, and they did not eradicate sects. They did not force them into Islam.
 see more: Sheikh Muhammad al-Yaqoubi Responds to al-Julani's al-Jazeera Interview May 31st, 2015
 ”in America at the Catholic University in Washington”
 Ibn ʿĀbidīn even says in his book Radd Al-Muḥtār that oppression against non-Muslims is worse than oppression against Muslims.
 - thereby offering them the same stable protection as for Christians and Jews, who have live under Islamic rule for centuries.
 ”I mention that in my new book on fighting ISIS (Daesh).”
 these proofs and hadith are mentioned in his book:
The Obligation to Fight ISIS: A Detailed Fatwa Proving That ISIS Have Strayed from Islam, Opposed Sharīʿah and That Fighting Them is Obligatory.
( إنقاذُ الأمَّة: فتوﻯٰ مفصلة في إثبات أن داعش خوارج وأن قتالهم واجب)
More Texts And Explanations:
freedom of thought
his personal traits
role of spiritual master
The Source - the Supreme Center
the end of time
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