Маджхима Никая 5:191
SUJATOEvaṁ kho, bhikkhu, ajjhattaṁ asati aparitassanā hoti.
That’s how there is no anxiety about what doesn’t exist internally.
Evaṁ kho, bhikkhu, ajjhattaṁ asati aparitassanā hoti.
That’s how there is no anxiety about what doesn’t exist internally.