金光明經文句記 4.141

4.141

三、「此一」下，釋無有堅實。由無明、愛者二不覺為因，即能生心也。一念託胎是不覺果，名所生心。計此因果，名為本末。既皆不覺，豈是真實？故云都虛無堅實也。

Third, from "This one" downward, explaining "having no solidity." Due to ignorance and craving—these two non-enlightenments—serving as causes, they are the mind that can produce. A single thought of entering the womb is the fruit of non-enlightenment, termed the mind that is produced. Reckoning this cause and fruit is called the root and branch. Since both are non-enlightenment, how could they be real? Hence it is said that they are entirely empty and devoid of solidity.