大般涅槃經義記 7.242

7.242

前中初先反舉說非，明佛不說，先舉佛說，下顯其非。「非佛是魔」明其人非，「生死之相遠涅槃相」明其行非。「何以故」下正明不說，先徵後辯。辯中，初明佛說不定，「譬如刀」下破他定說，先舉刀喻，次就破定，「以是義」下約之顯法。

In the former part, it first conversely adduces the incorrectness of the statement to clarify that the Buddha does not speak [so]; first adducing the Buddha's statement, and below displaying its incorrectness. "Not the Buddha, but Māra" clarifies that the person is incorrect; "the marks of birth and death are far from the marks of nirvāṇa" clarifies that the practice is incorrect. From "Why is that?" onward properly clarifies not speaking, first questioning and then discriminating. Within the discrimination, it first clarifies that the Buddha's teaching is not fixed; from "Just like a knife..." onward refutes the other's fixed assertion, first adducing the simile of the knife, next refuting the fixed based on it; from "For this reason..." onward applies it to reveal the dharma.