A few months later, one Hussein bin Mahmoud, a jurist of Sharia law for the Islamic State, said in an article published on February 17, 2015, and appearing in various jihadi websites, that all Christian churches in Cairo must be demolished. Titled the “Ruling on Egypt’s Christians,” the article, written like a fatwa, asserts:
The ruling concerning the churches that are in Cairo is that they be destroyed, according to the consensus of the righteous forefathers, because they are new under Islam, and Cairo is a new city whose original inhabitants were Muslim; there were no churches in it previously.
As for churches in Upper Egypt, which may have been in existence before the Islamic conquest of Egypt, these may remain but may never be renovated or fixed.
All this is related to the mainstream Islamic view concerning non-Muslim places of worship: if they existed when Islam’s historic jihadis invaded the land, and if the native people surrendered peacefully, they may continue to exist (though never repaired); if, on the other hand, the native people resisted the invading Muslims, then all existing churches must be destroyed. In both cases, new churches are not allowed to be built.