Refuting ISIS: A Rebuttal Of Its Religious And Ideological Foundations is a 2015 book by Muhammad al-Yaqoubi, a Syrian Islamic scholar and regarded among the 500 most influential Muslims, presents a response to ISIS' ideology and crimes.

He also argued that Muslims are obligated to fight ISIS, since the group had both "unlawfully" spilled blood and had ignored advice pointing out their theological errors.

This is because slavery is banned under international agreements which resemble the Prophet's own Hilf al-Fudul or "League of the Virtuous."

He refutes ISIS claims that these sites are idolatrous since erecting mausoleums for Prophets and saints is not the same as apportioning divinity to them.

He also argues that the destruction of synagogues and churches falls foul of Quranic commandments.