User blog comment:Fraterchaos/ A Consideration of Sin and Justice/@comment-4783583-20140109152219/@comment-24364422-20140109170841

well, I admoit to not having read the thing. But I had heard some people talk abotu Islam having a tenet of that sort, that if you allowed sin to occur around you and didn't try to stop it, you could be punished.

It may be something that is believed and followed without being an actual passage from the Qu'ran...

Just like any religion, there are often practices that are not actually found in the holy book. But I'd have to research it. I know I have heard Muslims propound that theory that they were required to stop sin around them.