Sanditthika Sutta: Visible Here-&-Now
The four right efforts in the noble path are: 


effort to prevent unwholesome mental states.
effort to abandon unwholesome mental states.
effort to develop wholesome mental states
effort to maintain &amp; increase wholesome mental states


Therefore, when the mind without delusion is discerned, the effort is made to maintain the mind without delusion, which requires governance or supervision by mindfulness.