俱舍論記 30.154

30.154

「謂業為先至故名差別」者，論主答。謂現起業最初為先，後熏成種在色、心中。起此色、心中種，中無間斷，名為相續，即相續種。後後剎那異前前種，名為轉變，即轉變種。於最後位一剎那時，有勝功能無間生果，勝前轉變，故名差別。

Regarding "Karma being the antecedent … hence it is called culmination": the author of the treatise answers. That is, active karma is initially the antecedent, which subsequently perfumes and forms seeds within form and mind. The arising of this seed within form and mind without interruption in between is called 'continuum'—that is, the seed in continuum. Later moments differing from earlier moments is called 'transformation'—that is, the seed in transformation. At the very last moment, having a superior capacity to immediately produce the fruit, which surpasses the previous transformation, it is therefore called 'culmination'.