Why are we citing an article on a militant Jihadi website? I'm sorry, but since when is HN an outlet for crackpot militant religious groups?
P.S. Whoever pens that site doesn't quite grok Islam. Says "there are no copyrights in Islam" in all footers. Without copyright, or at least attribution, there wouldn't be Islam today (i.e. the Sunnah is all citations that would collapse if unattributed.)