瑜伽師地論略纂 6.6

6.6

In the fourth, the Sūtra on Distinguishing the Dhyānas, the text has four parts: first, citing the sūtra to state [the topic]; second, briefly explaining the four transitions; third, extensively explaining the marks; fourth, concluding. Regarding "Among these four transitions, one should know that at two times there is error": the four transitions are: first, error at the time of advancing in defiled samādhi; second, error at the time of heading toward regression in defiled concentration; third, non-error when actually regressing from defiled concentration; fourth, non-error when actually advancing in undefiled concentration. Alternatively, the first two take advancing to be regression, which is called error. The first takes advancing in defiled concentration to be regression; the second takes advancing in undefiled concentration to be regression; hence both are called error. The treatise states the second.