首楞嚴義疏注經 10.79

10.79

窮行陰空者，想盡行露，今於觀中研令取空也。以研窮心計度行陰，一切眾生一身之內即生即滅，世界亦爾。生處有邊，滅處無邊，生現見故，滅不見故。

Exhausting the emptiness of the aggregate of formations means that perception is exhausted and formations are exposed; now, within contemplation, he investigates them to take them as empty. Using this investigating mind to calculate the aggregate of formations, within a single body of all sentient beings there is instantaneous arising and instantaneous ceasing; the world is also like this. Where there is arising, it is bounded; where there is ceasing, it is boundless, because arising is presently seen, while ceasing is not seen.