首楞嚴義疏注經 10.22

10.22

生基全破，行陰現也。八百功德，謂由定力發其眼根本分功德，百倍增勝。乘此通力，見八萬劫眾生死此生彼；過此不知，亦是行陰勢力盡處，不知識陰生因，種子無明所熏感果差別。以不知故，便執本來無因而有，如見飛鳥遠不及處，便謂為無。以眼根取塵本唯八百，世間通力不越於此；若出世通，過此無礙。

"The basis of birth is completely broken through" means that the aggregate of volitional formations appears. "The eight hundred merits" means that through the power of samādhi, the fundamental merits of his visual faculty are brought forth, increasing a hundredfold in superiority. Relying on this supernormal power, he sees sentient beings dying here and being born there throughout eighty thousand eons; beyond this he does not know, which is also the point where the power of the aggregate of volitional formations comes to an end. He does not know the causal origin of the aggregate of consciousness, nor the differentiation of karmic fruits perfumed by seeds of ignorance (avidyā). Because he does not know, he clings to the view that beings originally exist without a cause, just as someone seeing a flying bird beyond the reach of his vision asserts that it does not exist. Because the visual faculty grasps sense objects with originally only eight hundred merits, mundane supernormal power does not exceed this; supramundane supernormal power, however, transcends this without obstruction.