維摩經玄疏 6.131

6.131

三、明不定教者，亦不同舊解，別有遍方不定之說。今但於五味教內利根之人不同，教教悉皆得見佛性，故有滿字之義，故《涅槃經》云「譬如有人，置毒於乳，乃至醍醐，亦能殺人」。所以梁武、流支、攝山三家，此經、《大品》皆是滿字，明佛性辨常，意在此也。

Third, in clarifying the indeterminate teaching: this also differs from ancient interpretations, which separately posited a theory of omnipresent indeterminacy. Now, it is simply that within the teachings of the five flavors, people of sharp faculties are diverse, and in every single teaching they are all able to see the buddha-nature; hence there is the meaning of the complete letter. Thus the Nirvāṇa Sūtra says: "It is like someone putting poison into milk, up to ghee, and it can also kill people." This is why the three masters—Emperor Wu of Liang, [Bodhi]ruci, and Sheshan—regarded this sūtra and the Pañcaviṃśatisāhasrikā [Prajñāpāramitā] as having the complete letter, clarifying the buddha-nature and discerning eternity; their intent lay here.