Mumtaz killed a man who questioned the manmade abomination of murdering someone for blasphemy.
There is no such ruling in the Qur'an which says it is complete and fully detailed.
There is no such ruling in the Qur'an for killing someone who questions the absurdities our devoid of wisdom ancestors have made some of their deaf, dumb and blind followers believe.
Killing anyone for crimes not punishable in the Qur'an is an act of TREASON against Allah and His Messenger. The Messenger only followed the Qur'an.
There may be plenty of Qadiri's in Pakistan, but there not enough 'Muhammads'!