大般涅槃經義記 9.208

9.208

八道不假緣應一切得，不一切得，明無聖道。於中初明道非緣得。「何故一切不作聖人」約法徵人。「若一切」下，以不齊得，結無聖道。

Eighth, if the path does not rely on conditions, all should attain it; since not all attain it, this clarifies that there is no noble path. Therein, it first clarifies that the path is not attained through conditions. "Why do not all become noble persons?" questions the persons based on the dharma. From "If all" onward, by means of unequal attainment, it concludes that there is no noble path.