御注金剛般若波羅蜜經宣演 2.109

2.109

經。何以故至是名心住　演曰。第三徵釋。所以於中有四問答徵釋此。初徵問。多心難見。而悉知者有何所以。答中魏本云。如來說諸心住皆為非心住。是名為心住。貞觀云心流注。心流注者如來說非流注。是故如來說名心流注。心流注論云。心流注者謂三世心。若干種心者應知有二種。為染及淨。即是共欲心離欲心等。世者謂過去等分。於此二中安立第一義故。

Sūtra: “Why is this? [...] this is named mental abiding.”
Exposition: Third, querying and explaining the reason. Within this there are four questions and answers querying and explaining. This is the first query: the manifold minds are difficult to see, yet he fully knows them; what is the reason? In the answer, the Wei version says: "The Tathāgata speaks of all mental abidings as non-mental abidings; this is named mental abiding." The Zhenguan version says "stream of mind": "As for the stream of mind, the Tathāgata speaks of it as non-stream; therefore the Tathāgata speaks of it as named the stream of mind." The commentary on the stream of mind says: "The stream of mind refers to the minds of the three times. As for the manifold different minds, it should be known that there are two kinds: defiled and pure, which are the mind accompanied by desire, the mind separated from desire, and so forth. 'Times' refers to past and other periods. It is because the paramārtha is established within these two."