瑜伽論記 21.428

21.428

前中言退墮有二，一、不方他者，謂自然壽命色力等退減後劣於前故；二、方他者，如我一期壽命短色力等弱不及於他名退墮，翻前名為昇進，十種受欲者，如本地第二卷記釋，施戒修善有漏行者，多說四無量為修也。

In the former, regarding "falling back, there are two: first, not relative to others": this means that life span, physical appearance, and strength naturally decline so that the later is inferior to the earlier; "second, relative to others": for example, one's life span in a single period is short, and physical appearance and strength are weak and do not match others, which is called falling back. The reverse of the former is called progressing. As for the ten kinds of enjoying sensual desires, they are explained as in the record of the second fascicle of the Maulī Bhūmiḥ; regarding the defiled good practices of generosity, morality, and cultivation, cultivation mostly refers to the four immeasurables.