This proves that the Islamic State (ISIS) isn’t Muslim, right? Otherwise, why would they kill Muslims praying in mosques? The Qur’an forbids Muslims to kill other Muslims (4:92), but the Islamic State considers Muslims who don’t accept its authority to be apostates, and hence lawfully to be killed under Islamic law.
“Iraq: IS attack on mosque kills one, injures 3,” MENAFN, September 3, 2018 (thanks to The Religion of Peace):
(MENAFN) Police declared that one person has died and three more were injured after a suspected Islamic State group jihadists attacked people getting out a mosque north of Baghdad….
The officer added: “The man, aged 80, had just finished praying (and was leaving the mosque) when the jihadists opened fire at him.”
“Three other people were wounded in the shooting.”