仁王護國般若波羅蜜多經疏 3.363

3.363

解曰：言修習者，如《十地論》，謂此地中修菩提分行相無邊，或所利無邊、或即趣向果德無邊，名無邊也。分者因也，亦支分義，趣果果分名分法也。從此第二明菩提分。

Explanation: Regarding "cultivate," as the Daśabhūmika-śāstra states, on this bhūmi the aspects of cultivating the factors of awakening are boundless, or the benefits are boundless, or the fruition virtues toward which they advance are boundless; hence they are called "boundless." "Factor" means cause, and also means constituent; proceeding toward the fruit, the components of the fruit are called "factor phenomena." From here, the second [part] clarifies the factors of awakening.