瑜伽師地論略纂 16.14

16.14

論云「若生下地，於上起愛，未得離欲不定心者，當知此愛是欲界繫」者，謂前三相愛味中，第一未得定愛味即欲界貪，緣上界生貪為他界緣，或不同小乘緣求上定皆名善法欲，以彼心中染不染故。如文相狀，即同前五十九，上地下緣，下等互得相緣。此亦云我當得時如是愛味，即是緣上，名自心之相分。　「未得退」者，未得法不能起得，故名退。　「已得退」者，即已得法退已，起煩惱。　「習行退」者，現所得法不起，名退。　問曰：後二退若為差別？解云：聖人已斷惑種，退起現前，失諸功德，名已得退。若諸聖人所有功德不得並生，名習行退，已唯不起煩惱故，不同已得退也。

Regarding the treatise stating: "If one born in a lower level gives rise to craving toward a higher [level] and has not yet attained freedom from desire, possessing an unstable mind, it should be known that this craving is bound to the desire realm": This means that among the three aspects of relishing mentioned earlier, the first—relishing without having attained the concentration—is craving of the desire realm. Taking a higher realm as object to generate craving is taking another realm as object. Or, unlike the Hīnayāna where seeking a higher concentration is entirely called desire for wholesome dharmas (kuśaladharmacchanda), here it depends on whether there is defilement or non-defilement in that mind. As the textual characteristics indicate, it is the same as fascicle 59 above, where a higher level takes a lower as object, and lower, etc., mutually take each other as object. Here it also says that when I shall attain it, such relishing arises, which is taking the higher as object, called the object-aspect (nimittabhāga) of one's own mind.

"Retrogression from the unattained" means that one is unable to give rise to and attain dharmas not yet attained; hence it is called retrogression.

"Retrogression from what has been attained" means that having retrogressed from dharmas already attained, defilements arise.

"Retrogression in habitual practice" means that dharmas presently acquired do not manifest; this is called retrogression.

Question: How are the latter two retrogressions distinguished? Answer: When an ārya has already severed the seeds of delusion, but retrogresses and [delusion] arises in active manifestation, losing all qualities, this is called retrogression from what has been attained. If an ārya's various qualities cannot arise simultaneously, this is called retrogression in habitual practice, because it merely involves defilements not arising, unlike retrogression from what has been attained.