One verse

Srimad Bhagavatam 6.1.10

6.1.10

क्‍वचिन्निवर्ततेऽभद्रात्‍क्‍वचिच्चरति तत्पुन: । प्रायश्चित्तमथोऽपार्थं मन्ये कुञ्जरशौचवत् ॥ १० ॥

kvacin nivartate ’bhadrat kvacic carati tat punah prayascittam atho ’partham manye kunjara-saucavat

kvacit
sometimes
nivartate
ceases
abhadrat
from sinful activity
kvacit
sometimes
carati
commits
tat
that (sinful activity)
punah
again
prayascittam
the process of atonement
atho
therefore
apartham
useless
manye
I consider
kunjara-saucavat
exactly like the bathing of an elephant.

Sometimes one who is very alert so as not to commit sinful acts is victimized by sinful life again. I therefore consider this process of repeated sinning and atoning to be useless. It is like the bathing of an elephant, for an elephant cleanses itself by taking a full bath, but then throws dust over its head and body as soon as it returns to the land.