Chapter 6 · verse 45 · gita.yoga.org

Bhagavad Gita 6.45

प्रयत्नाद्यतमानस्तु योगी संशुद्धकिल्बिषः। अनेकजन्मसंसिद्धस्ततो याति परां गतिम्

But the Yogi who strives assiduously, purified of sins and perfected gradually over many births, reaches the highest goal.