3.Refraining by Hand (Force)
When refraining by tongue is also not effective we must employ force, either by fighting or by punishment. If a little beating is not enough there is no harm in giving a severe beating. If one is sure that the person is committing a great sin (like adultery or sodomy) and by giving him a severe beating he will be injured and mend his ways, it is Wajib to mete out this punishment.
Finally when none of the methods prove effective we are exempted from the duty of Nahy Anil Munkar.