Mahabharata 6.26.38

न हि ज्ञानेन सदृशं पवित्रमिह विद्यतेतत्स्वयं योगसंसिद्धः कालेनात्मनि विन्दति

na hi jñānena sadṛśaṃ pavitramiha vidyatetatsvayaṃ yogasaṃsiddhaḥ kālenātmani vindati

Our plain-language meaning of this verse is waiting for scholar review.