Karma Yoga
आवृतं ज्ञानमेतेन ज्ञानिनो नित्यवैरिणा । कामरूपेण कौन्तेय दुष्पूरेणानलेन च ॥ ३.३९ ॥
āvṛtaṁ jñānam etena jñānino nitya-vairiṇā | kāma-rūpeṇa kaunteya duṣpūreṇānalena ca || 3.39 ||
By this— the wise one’s constant enemy—knowledge is veiled, O son of Kuntī: desire, insatiable like fire.
Knowledge is covered by this constant adversary of the wise, in the form of desire, O son of Kuntī, which is insatiable like fire.