3.38 Yatha, as; vahnih, fire, which is naturally bright; avriyate, is enveloped; dhumena, by smoke, which is born concomitantly (with fire) and is naturally dark; or as adarsah, a mirror; is covered malena, by dirt; ca, and; garbhah, a foetus; is avrtah, enclosed; ulbena, in the womb by the amnion; tatha, so; is idam, this; avrtam, shrouded; tena, by that.
Again, what is that which is indicated by the word idam (this), and which is covered by desire? The answer is: