श्लोक 4.38

न हि ज्ञानेन सदृशं पवित्रमिह विद्यते। तत्स्वयं योगसंसिद्धः कालेनात्मनि विन्दति॥

na hi jñānena sadṛśaṁ pavitram iha vidyate, tat svayaṁ yoga-saṁsiddhaḥ kālenātmani vindati.

Meaning

Knowledge makes our mind clean and clear. When we learn with patience and honesty, wisdom slowly shines inside us.