俱舍論記 22.89

22.89

「又受殊勝至都無有故」者，復約事難。又受勝境所生樂時，有何下苦而起樂覺？汝許爾時有下苦者，如是下苦過去已滅、未來未生也，應爾時有極樂覺，此位眾苦都無有故。

As for "Furthermore, when experiencing an extraordinary... because none at all exists": this raises an objection based on facts. Furthermore, when experiencing the pleasure produced by an excellent object, what low suffering is there with respect to which an awareness of pleasure arises? If you accept that there is low suffering at that time, such low suffering has already ceased in the past or has not yet arisen in the future; there should then be an awareness of supreme pleasure, because at this stage no suffering at all exists.