妙法蓮華經玄義 9.165

9.165

住本用迹者，即是本地不動而迹周法界，非生現生、非滅現滅，常用此迹利潤眾生。此義據師。若據弟子者，即是法身菩薩，以不住法住於本地，無謀之權，迹用無盡。文云：「又善男子！諸佛如來，法皆如是，為度眾生，皆實不虛。」佛散赴眾緣，文小不次，今題來證義，引於〈壽量〉文盡。

Abiding in the original source and employing the traces: that is, being unmoved in the original ground, yet the traces pervade the dharma realm; not being born, he manifests birth; not being extinguished, he manifests extinction; constantly using these traces to benefit and moisten sentient beings. This meaning is based on the master. If based on the disciples, they are dharma-kāya bodhisattvas who, by means of non-abiding dharma, abide in the original ground; having provisionality free of calculation, the function of their traces is inexhaustible. The text says: "Furthermore, good sons, the dharmas of all the Buddhas, Tathāgatas, are all like this; for the sake of saving sentient beings, they are all real and not false." The Buddha disperses and responds to all conditions; the text is slightly out of order, and is now cited here to verify the meaning, completely quoting the text of the chapter on "Lifespan".