成唯識論述記 7.609

7.609

述曰：即解第二句頌也。謂前所明本識中種，由餘三緣助故，即便如是如是轉變。謂先未熟名生，如在牽引因位，從此轉變至熟時，如在生起因中為愛水潤，有轉易變熟之相，名為轉變。以種子數眾多，皆有轉變，生諸分別故，重言「如是」。

The Commentary states: This explains the second line of the verse. That is, the seeds in the fundamental consciousness explained earlier, assisted by the other three conditions, transform in such and such ways. When previously unripened, it is called arising, as in the stage of lead-in cause (ākṣepahetu); transforming from this until ripening, as in the stage of generating cause (janakahetu) moistened by the water of craving, having the characteristics of shifting and ripening, it is called transformation. Because seeds are numerous and all have transformations that produce various conceptual discriminations, "in such and such ways" is repeated.