Sanskrit

आवृतं ज्ञानमेतेन ज्ञानिनो नित्यवैरिणा। कामरूपेण कौन्तेय दुष्पूरेणानलेन च।।3.39।।

Summary

It is the wise man's constant enemy; it tarnishes the face of wisdom, being as insatiable as a flame of fire.