釋禪波羅蜜次第法門 2.104

2.104

不應作而作，應作而不作，
煩惱火所燒，後世墮惡道。
若人罪能悔，悔已莫復憂，
如是心安樂，不應常念著。
若有二種悔，若應作不作，
不應作而作，是則愚人相。
不以心悔故，不作而能作，
諸惡事已作，不能令不作。

“Having done what should not be done,
And having left undone what should be done,
Burned by the fire of defilements,
One will fall into the evil realms in a future life.
If a person can repent of their transgressions,
Having repented, they should grieve no more;
In this way the mind is at peace and joy,
And one should not constantly brood over it.
If there are these two kinds of regret—
Either that what should be done was left undone,
Or that what should not be done was done—
This is the mark of a fool.
It is not by means of mental regret
That what was left undone can be done;
When various bad deeds have already been done,
One cannot make them undone.”