大般涅槃經集解 15.29

15.29

案道生曰：此明說常有真有偽，不可其不信也。僧亮曰：依經法以撿實，則知說者之善惡也。智秀曰：次明世間應須依此四人，受降魔之法也。迦葉前後凡作兩翻難：第一謂魔能現作佛像，真之與偽何由可分？今此答中有兩意，此即第一，且一往許令分善惡也。

Daosheng notes: This clarifies that teachings on permanence have the true and the false, and one must not disbelieve them. Sengliang says: By relying on the sūtra's Dharma to examine reality, one knows the goodness or evil of the speaker. Zhixiu says: Next it clarifies that the world should rely on these four persons to receive the method for conquering Māra. Kāśyapa made two challenges in total, before and after: the first was that Māra can manifest the Buddha's form, so how can the true and false be distinguished? In this reply there are two intentions; this is the first, provisionally allowing that good and evil can be distinguished.