One verse

Bhagavad Gita 6.45

6.45

प्रयत्नाद्यतमानस्तु योगी संशुद्धकिल्बिषः | अनेकजन्मसंसिद्धस्ततो याति परां गतिम् ||६-४५||

prayatnādyatamānastu yogī saṃśuddhakilbiṣaḥ . anekajanmasaṃsiddhastato yāti parāṃ gatim ||6-45||

prayatnāt
by rigid practice
yatamānaḥ
endeavoring
tu
and
yogī
such a transcendentalist
saṁśuddha
washed off
kilbiṣaḥ
all of whose sins
aneka
after many, many
janma
births
saṁsiddhaḥ
having achieved perfection
tataḥ
thereafter
yāti
attains
parām
the highest
gatim
destination

And when the yogī engages himself with sincere endeavor in making further progress, being washed of all contaminations, then ultimately, achieving perfection after many, many births of practice, he attains the supreme goal.