Bhagavad Gita 4.36
अपि चेदसि पापेभ्यः सर्वेभ्यः पापकृत्तमः। सर्वं ज्ञानप्लवेनैव वृजिनं सन्तरिष्यसि।।4.36।।
api cedasi pāpebhyaḥ sarvebhyaḥ pāpakṛttamaḥ| sarvaṃ jñānaplavenaiva vṛjinaṃ santariṣyasi||4.36||
api cedasi papebhyah sarvebhyah papakrittamah sarvam jnanaplavenaiva vrijinam santarishyasi4.36
Meaning
Even if you are the most sinful of all sinners, you will cross over all wickedness by the raft of knowledge alone. The power of spiritual knowledge surpasses all other means of purification.
यदि तुम सब पापियों से भी अधिक पाप करने वाले हो, तो भी ज्ञानरूपी नौका द्वारा, निश्चय ही सम्पूर्ण पापों का तुम संतरण कर जाओगे।
This is verse 36 of 42 in Chapter 4 (Jnana Karma Sanyasa Yoga) of the Bhagavad Gita.