The brutal jihadist Islamic State (ISIS) terror group that has seized large portions of Iraq and Syria in recent months released the fourth edition of its English-language digital magazine "Dabiq" on Sunday, in which it encourages taking women as sex slaves as part of Islam.

In the article in question from the digital publication, entitled "The revival (of) slavery before the Hour" - a reference to Judgment Day - the group outright calls for the sexual enslavement of non-Muslim women, particularly from the Kurdish Yazidi ethnic minority.

"One should remember that enslaving the families of the kuffar - the infidels - and taking their women as concubines is a firmly established aspect of the Shariah, or Islamic law," wrote ISIS in the article, reports CNN.

Harrowing reports have surfaced of the endless rape and torture being imposed on Yazidi women and girls, with many opting for mass-suicide after the brutalities.

The article comes out in time for the release of a Human Rights Watch (HRW) report on ISIS crimes against the Yazidis in Iraq, which is based on interview with 76 displaced persons.

"The Islamic State's litany of horrific crimes against the Yazidis in Iraq only keeps growing," said HRW special adviser Fred Abrahams. "We heard shocking stories of forced religious conversions, forced marriage, and even sexual assault and slavery - and some of the victims were children."

In fact, ISIS is not unique in its use of sexual assault and slavery against its enemies.

Deputy to the Chief Mufti (Islamic scholar) of Syria, who is loyal to Syrian President Bashar Assad's regime that ISIS is fighting against, in early January gave Syrian soldiers religious permission to rape so as to take revenge on Syrian rebels.

Speaking of the phenomenon of ISIS atrocities, Islam expert Prof. Rafi Israeli told Arutz Sheva last month that the acts are based on Islam having a basic disregard for human life: "for them it is not sacred, like it is for us." He noted the Koran calls for terror against enemies, without specifying or limiting who those enemies are.