What is the source and meaning of this Ibn Taymiyyah quote used by ISIS/Daesh?

I came across a video\[1] of the burning of a Jordanian pilot by ISIS, and at the end of it, it quotes the statement: " فإن كان في التمثيل الشائع لهم دعاء إلى الإيمان وحرز لهم عن العدوان؛ فإنه هنا من إقامة الحدود والجهاد المشروع " attributed to Imam Ibn Taymiyyah, as if to validate their actions. (I note that other sources indicate that 'الشائع' there, is a substitute for an original word 'السائغ') Might anyone be able to further elaborate on the phrase above: its source(s) and meaning(s)? --- Note: 1. Link to reddit post containing the NSFW vid . Shared here in case anyone needs to verify the existence of the quoted statement.