api ca tat putratvād iti nāyaṃ svabhāvahetur yathā kṛtakatvaṃ, nahi kṛtakatvasyānyat tattvam asti muktvānityatvam nanvevaṃ tatputratvasyānyaḥ svabhāvonāsti yataḥ pañcopādānaskaṃdhātmakasya kañcid apekṣya tatputra iti vyapadeśonatu śyāmatvasya /
Moreover, "because [he] is his son" is not a natural reason like "being produced" is [for proving impermanence], for "being produced" has no other essence apart from impermanence, but it is not the case that "being his son" has no other nature, because the designation "his son" depends on the aggregate of five constitutive elements, not on [being] dark.