瑜伽師地論略纂 12.161

12.161

論云「若正修行最上上品勇猛精進，或有能轉眾多中劫，或有乃至轉多大劫」者，此唯論初劫菩薩，地前有超故。何以得知者？即次前解三劫中，初劫此就恒常勇猛精進，非不勇猛，故知初劫有不勇猛，故得說超。又前解第二劫云此即決定，以是菩薩得清淨意樂，決定勇猛精進故。故知二劫以去無不勇猛，不可說超，一切時恒精進也。故起煩惱，但為利生。

Regarding the treatise's statement, "If correctly cultivating the supreme, highest grade of vigorous diligence, some may be able to transcend many intermediate eons, or some may even transcend many great eons": This is discussed solely with regard to bodhisattvas of the first eon, because there is surpassing before the bhūmis. How is this known? In the explanation of the three eons just prior to this, the first eon was discussed in terms of constant vigorous diligence, not lacking vigor; thus we know that in the first eon there is non-vigor, and therefore it is possible to speak of surpassing. Furthermore, the preceding explanation of the second eon stated that this is determined, because these bodhisattvas have attained purified resolve and are definitely vigorously diligent. Hence we know that from the second eon onward there is none who lacks vigor, and surpassing cannot be spoken of; at all times they are constantly diligent. Therefore, when they arouse afflictions, it is solely for the benefit of sentient beings.