金光明經文句記 5.185

5.185

三、一句，示法無覺等者，此義須對報應簡之。秖一大覺而有寂照及非寂照三種之能，故名三身。覺即照覺，能照理故，即是報身。無覺即寂，覺能現形故，即是應身。今云無覺無不覺者，即非照非寂，覺能雙亡雙用，名究竟覺，即是法身。是故三身名為三佛。三種之了亦復如是，就身名覺、就心名了，三義宛然。

Third, the single line indicates the Dharma-body: regarding 'having no awareness', etc., this meaning must be differentiated by contrasting it with retribution and response. There is only one great enlightenment, yet it possesses the three functions of quiescence, illumination, and neither-quiescence-nor-illumination; therefore they are called the three bodies. Enlightenment is illuminating awareness: because it can illuminate principle, it is the retribution body. Having no awareness is quiescence: because awareness can manifest bodily forms, it is the response body. Now saying 'having neither awareness nor non-awareness' means neither illuminating nor quiescent: awareness can double-negate and double-employ, which is called ultimate enlightenment; that is the Dharma-body. Therefore the three bodies are called three Buddhas. The three kinds of understanding are also like this: in terms of the body it is called awareness, and in terms of the mind it is called understanding; the three meanings are fully evident.