大毘盧遮那成佛經疏 1.38

1.38

經云「建立淨、不建立無淨」者，是中有二種計：前句謂有建立一切法者，依此修行謂之為淨；次句謂此建立非究竟法，若無建立所謂無為乃名真我，亦離前句所修之淨，故云無淨也。由不觀我之自性，有如是見生，廣說如上。

The sūtra says: “Positing purity and non-positing as non-pure.” Within this are two kinds of imputations: the former phrase refers to those who hold that there is that which posits all dharmas, and practicing based on this is called purity; the next phrase refers to those who hold that this positing is not the ultimate dharma, and that if there is no positing—what is called the unconditioned—that is the true self, which also leaves behind the purity practiced in the former phrase; therefore it says “non-pure.” Due to not contemplating the intrinsic nature of the self, such views arise, as explained at length above.