“Sons of good family, again it is like the example of figures of horses, elephants, women or men being fashioned out of wax, then encased in clay [so that they are completely] covered [with it and finally, after the clay has dried,] melted [in fire]; and after [the wax] has been made to drip out, gold is melted. And when [the cavity inside the mold] is filled with the melted [gold], even though all the figures, having cooled down step by step (krameṇa) [and] arrived at a uniform state, are [covered with] black clay and unsightly outside, [their] insides are made of gold.
Then, when a smith or a smith’s apprentice [uses] a hammer [to] remove from the [figures] the outer [layer of] clay [around] those figures which he sees have cooled down, then in that moment the golden figures lying inside become completely clean.”