bsgrub pa'i chos

among the chos mi mthun pa'i dpe ltar snang lnga, gtan tsigs rig pa's way of establishing the sbyor ba has an example w an incompatible dharma chos mi mthun pa'i dpe, so that both thesis and conclusion cannot be reversed sgrub byed dang bsgrub bya, and there is the fault of non-refutation, eg, according to the sgra'i bstan bcos kyis yod pa'i bstan bcos sound is permanent, since it is thogs pa med pa. If a example w an incompatible dharma, like space is given, space is eternal &, thogs pa med pa so neither thesis or conclusion can be refuted] [IW]