首楞嚴義疏注經 9.49

9.49

Question: This tainted dhyāna has a limited lifespan; how can it reach 'the end of future time'? Answer: This refers to the attainment of long-lasting retribution lifespans in concentration, moving through counts of kalpas, hence called 'the end of future time'; it is not discussed in terms of after the retribution. Furthermore, although this wholesome concentration is tainted, it can comply with wondrous cultivation: based on the fourth dhyāna, one elicits this concentration, perfuming untainted dhyāna, and cultivates the knowledge of aspirations, non-contention, and the border-limit concentration. The five anāgāmins below also rely on this concentration to give rise to the mixed cultivation of tainted and untainted dhyāna. If ordinary beings attain it and advance no further in cultivation, their lifespan is indeed allowed to be limited; if noble ones cultivate it, it reaches the end of future time. Extending in both directions, it is cultivated by both ordinary beings and noble ones.