四明十義書 2.61

2.61

然《示珠指》解於三法，只得心法生佛之義，全不得彼彼眾生生佛、彼彼諸佛生佛。所以釋云：佛名真覺，生名不覺。心即生佛之心，非離生佛外別有心為生佛之本。經示本末因果不二，故云三無差別耳（佛名下《珠指》文）。

Yet the Shizhu zhi, in explaining the three dharmas, grasps only the sense in which the mind-dharma is sentient beings and buddhas; it completely fails to grasp how those various sentient beings are sentient beings and buddhas, or how those various buddhas are sentient beings and buddhas. Therefore its explanation states: "A buddha is called true awakening; a sentient being is called unawakening. Mind is simply the mind of sentient beings and buddhas; apart from sentient beings and buddhas, there is no separate mind that serves as the root of sentient beings and buddhas. The sūtra indicates that root and branch, cause and effect, are non-dual; hence it says 'the three are without differentiation'" (the text from "a buddha is called" onwards is from the Zhuzhi).