瑜伽師地論略纂 5.50

5.50

Regarding differences in birth resulting from cultivation, there are four points: 1. the cause of birth; 2. falling back due to defilement and advancing through wholesome states; 3. the locus of the cause of cultivation; 4. distinguishing differences. Regarding "Having been born there, if one gives rise to attachment and relishing, one immediately falls away": it is not that one can fall away from concentration in the higher bhūmis; rather, due to much attachment and relishing, one's lifespan is diminished, which is called 'immediately falling away'. This is falling away from rebirth.