大般涅槃經集解 57.74

57.74

案僧亮曰：因有三種，正因、緣因則別，境界因則共也。何者？三達智。一法不知，則非佛三世因緣也。各各有則無常者，謂彼佛所知、此佛不知，不知故惑不盡，佛應無常也。寶亮曰：第三段，明道性平等也。將欲廣明此理，故先作問也。

Sengliang remarks: "There are three kinds of causes: direct causes and conditioning causes are distinct, while the objective realm cause is shared. Why so? It is the wisdom of the three clear knowledges. If a single dharma is not known, it is not the Buddha's causes and conditions of the three periods of time. Saying that if each possesses it, it would be impermanent, means: what that Buddha knows, this Buddha would not know; because of not knowing, delusions would not be exhausted, and the Buddha would have to be impermanent." Baoliang says: "The third section clarifies the equality of the nature of the path. Intending to clarify this principle broadly, he first raises this question."