大乘起信論義記 2.248

2.248

In the application, "different according to the illusions of defilement" refers to untainted dharmas. "Different according to the illusions of intrinsic defilement" refers to avidyā dharmas. Because that avidyā is deluded regarding the principle of equality, its nature is intrinsically differentiated. Hence the text below says: "Because such avidyā is differentiated by its own nature." All untainted dharmas accord with the equal nature; speaking directly of their nature, there is no differentiation. It is only in accordance with the differentiated marks of defiled dharmas that untainted dharmas are said to have differentiation. As in the text below, relative to the differentiated defiled dharmas such as the karmic consciousness, the Gaṅgā-sands intrinsic virtues of innate enlightenment are spoken of. Furthermore, because of counteracting those differentiated defiled dharmas, the myriad differentiated virtues of incipient enlightenment are accomplished. In this way, defilement and purity are both tathatā manifesting in accordance with conditions, appearing to exist without self-substance; hence they are generally called "illusions." The above explanation of the difference between defilement and purity, explaining the mind's arising and ceasing, is concluded.