Bhagavad Gita 3.38

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.

As fire is enveloped by smoke, as a mirror is obscured by dirt, and as a fetus remains enclosed in the womb, so is this shrouded by that.

जैसे धुएँसे अग्नि और मैलसे दर्पण ढक जाता है तथा जैसे जेरसे गर्भ ढका रहता है, ऐसे ही उस कामके द्वारा यह ज्ञान ( विवेक) ढका हुआ है।