成唯識論述記 9.503

9.503

述曰：名印順者，印前所取無，順後能取無，及印能取無故，立印順名。此釋三位別名，此三位忍境空、識空故亦名忍，然中忍雖不印可，順樂忍可故亦名忍。此中正忍、順忍皆名忍故，不可難言：頂等位中亦順下忍，彼應名忍。初未有忍故，中忍初、後皆有忍故，故立忍名，是彼忍類故亦名忍，不同煖等。

The Commentary states: As for being named "confirming and conforming," it confirms that the prior grasped is nonexistent, conforms to the subsequent nonexistence of the grasping [subject], and confirms the nonexistence of the grasping [subject]; therefore, the designation "confirming and conforming" is established. This explains the specific designations of the three stages. Because these three stages acquiesce in the emptiness of the object and the emptiness of consciousness, they are also named patience. However, although middle patience does not confirm, it conforms to and delights in acquiescence, and thus is also named patience. Since both direct patience and conforming patience are named patience here, one cannot object: "The stage of the summit and so forth also conforms to lower patience; it should be named patience." In the beginning there is no patience yet; because middle patience has patience both before and after, the name "patience" is established, and being of that category of patience, it is also named patience, unlike heat and so forth.