। ॥ १०१ ॥
In plain words
In a dream you make love, and semen spills onto a clean white cloth. You wake: the lovemaking never happened — and the stain is there.
Close to the Sanskrit
As, in a dream, from the experience of sexual union there is an emission of semen upon a clean garment — on waking, the union would be unreal, [but] the soiling of the garment would be real.