BG 3.39
आवृतं ज्ञानमेतेन ज्ञानिनो नित्यवैरिणा ।
कामरूपेण कौन्तेय दुष्पूरेणानलेन च ॥
कामरूपेण कौन्तेय दुष्पूरेणानलेन च ॥
āvṛtaṁ jñānam etena jñānino nitya-vairiṇā
kāma-rūpeṇa kaunteya duṣpūreṇānalena ca
kāma-rūpeṇa kaunteya duṣpūreṇānalena ca
Word-for-word meanings
kaunteya — O son of Kuntī; jñānam — discernment; āvṛtam — is covered; etena — by this; nitya-vairiṇā — eternal enemy; jñāninaḥ — of the wise; kāma-rūpeṇa — in the form of desire; duṣpūreṇa ca — which is also insatiable; analena — [like] fire.
Translation
O Arjuna, discernment is covered by this eternal enemy of the wise in the form of desire, which is insatiable like fire.