大般涅槃經義記 2.32

2.32

In the third part, producing an error on the basis of these words: first, they produce the error; from 'Like a drunk person' downward, they affirm themselves and fault others. As for the earlier producing of an error, what kind of error is produced? Because the Buddha praised their good cultivation of non-self among conditioned dharmas, they take this basis to produce the four unconditioned inversions of impermanence and so forth in the buddha-ground; hence it is called producing an error. When the monks say to the Buddha, 'We not only cultivate the conception of non-self, but also cultivate the other conceptions,' it means that not only do they cultivate the conception of non-self with regard to the aggregates of worldlings, but they also cultivate the conceptions of impermanence, suffering, non-self, and so on with regard to the aggregates of the buddha-fruit. However, this is strictly termed producing the conceptions of impermanence, suffering, non-self, and so on regarding the buddha-ground; it cannot be termed producing the conceptions of impermanence, suffering, non-self, and so on within unconditioned dharmas. Why is this so? If one knew the unconditioned, one would never produce inversions such as impermanence. For what reason is impurity not mentioned? Because impurity is a concrete contemplation of particulars, it is not discussed. Furthermore, within the Tathāgata's outflow-free dharmas, people generally do not grasp them as impure; hence it is not mentioned, although in principle it is truly present.