Bhagavad Gita Chapter 3.39
āvṛtaḿ jñānam etena
jñānino nitya-vairiṇā
kāma-rūpeṇa kaunteya
duṣpūreṇānalena ca
Translation
Thus the wise living entity’s pure consciousness becomes covered by his eternal enemy in the form of lust, which is never satisfied and which burns like fire.