Quran [16:91] Verily, Allah enjoins justice, and the doing of good to others; and giving like kindred; and forbids indecency, and manifest evil, and wrongful transgression. He admonished you that you may take heed.
That verse from the Quran contradicts the suggestion of beheading the infidel and is consistent of mainstream Muslims
ISIS may be saying that are acting on behalf of islam but they are ignoring that verse
