Bhagavad Gita 3.38

धूमेनाव्रियते वह्निर्यथाऽऽदर्शो मलेन च।यथोल्बेनावृतो गर्भस्तथा तेनेदमावृतम्॥

dhūmenāvriyate vahniryathā''darśo malena ca |yatholbenāvṛto garbhastathā tenedamāvṛtam ||

As fire is enveloped by smoke, as a mirror is covered by dust, and as an embryo is surrounded by the amniotic sac, so is this enveloped by that.

As fire is shrouded by smoke, a mirror is covered by dust, and a child is enveloped by the womb, so is the universe enveloped in desire.

Our plain-language meaning of this verse is waiting for scholar review.