धूमेनाव्रियते वह्निर्यथाऽऽदर्शो मलेन च। यथोल्बेनावृतो गर्भस्तथा तेनेदमावृतम्।।3.38।।
dhūmenāvriyate vahnir yathādarśho malena cha yatholbenāvṛito garbhas tathā tenedam āvṛitam
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.