311-314:

Just as sharp-bladed grass,
if wrongly held,
wounds the very hand that holds it --
the contemplative life, if wrongly grasped,
drags you down to hell.

Any slack act,
or defiled observance,
or fraudulent life of chastity
bears no great fruit.

If something's to be done,
then work at it firmly,
for a slack going-forth
kicks up all the more dust.

It's better to leave a misdeed
    undone.
A misdeed burns you afterward.
Better that a good deed be done
that, after you've done it,
won't make you burn.