BG 3.39
आवृतं ज्ञानमेतेन ज्ञानिनो नित्यवैरिणा। कामरूपेण कौन्तेय दुष्पूरेणानलेन च
āvṛitaṁ jñānam etena jñānino nitya-vairiṇā kāma-rūpeṇa kaunteya duṣhpūreṇānalena cha
It is the wise man's constant enemy; it tarnishes the face of wisdom, being as insatiable as a flame of fire.
Translated by Shri Purohit Swami
O Arjuna, wisdom is enveloped by this constant enemy of the wise, in the form of desire, which is insatiable like fire.
Translated by Swami Sivananda
Word meanings (from the gita/gita dataset)
āvṛitam—covered; jñānam—knowledge; etena—by this; jñāninaḥ—of the wise; nitya-vairiṇā—by the perpetual enemy; kāma-rūpeṇa—in the form of desires; kaunteya—Arjun the son of Kunti; duṣhpūreṇa—insatiable; analena—like fire; cha—and