成唯識論演祕 3.537

3.537

詳曰：言不同定，專注所緣，理即可爾。云非易脫，道理難詳，豈八所緣非有為攝？若有為法，有為法者剎那生滅，云何不名前後易脫？

I examine: Saying that it is not like meditative absorption which focuses exclusively on an intentional object is indeed reasonable. But saying that it does not shift is a principle difficult to fathom: could the intentional objects of the eighth [consciousness] not be subsumed under conditioned dharmas? If they are conditioned dharmas, conditioned dharmas arise and cease moment to moment; how could they not be called shifting from earlier to later?