俱舍論記 6.98

6.98

「有謂前生至以彼劣故」者，答。有，謂前生勝無漏法，於後已起劣無漏法，如退上無學等果，下不還等果現前。又前已生苦法智上得，於後已生苦法忍上得，非同類因，以彼劣故。前明已生一切勝，望於未生一切劣非因。今明已生一切勝，望於已生一切劣非因，故前後別。

"Regarding 'There are [some], namely what arose previously... because that is inferior':" this is the answer. There are [some], namely superior anāsrava dharmas arisen previously, with respect to inferior anāsrava dharmas that have arisen later, as when falling away from a higher fruit such as that of a non-learner, a lower fruit such as that of a non-returner becomes manifest. Furthermore, the acquisition (prāpti) belonging to dharma-knowledge of suffering already arisen previously is not a sabhāga-hetu with respect to the acquisition belonging to dharma-forbearance of suffering arisen later, because the latter is inferior. The previous [passage] clarified that all already-arisen superior [dharmas] are not causes with respect to all unarisen inferior [dharmas]. The present [passage] clarifies that all already-arisen superior [dharmas] are not causes with respect to all already-arisen inferior [dharmas]; hence the previous and latter differ.