大般涅槃經義記 7.8

7.8

先辨光相。「時大眾中」明現光處，「忽然之頃」明現光時，「有大光明」正明現光，「非青色」下顯其光相。琉璃菩薩從於平等實證身中放阿含光令人覩見，是故大眾非青見青、乃至非見而得見也。「大眾遇光，身心快樂」明光利益，先法、後喻。問曰：何故無邊放光令此眾怖，瑠璃放光令此眾樂？蓋隨化宜不同故爾。云何不同？無邊將來為表聖滅，欲使此眾覺世不安，故令眾怖。今此琉璃所放光者，為欲顯法令眾證入，勝益將至，故使眾樂。

First, discriminating the mark of light: 'At that time, in the great assembly' clarifies the place where the light was manifested. 'In an instant' clarifies the time the light was manifested. 'There was a great radiant light' directly clarifies the manifestation of the light. From 'not blue' downward shows the mark of this light. Vaiḍūrya Bodhisattva, from within the body of equal, real realization, emitted the light of the Āgamas to make people behold it; therefore, the great assembly saw blue where there was no blue, and up to being able to see where there was no seeing. 'When the great assembly encountered the light, their bodies and minds were joyful' clarifies the benefit of the light, first in terms of the Dharma, and then by analogy. Question: Why did Boundless emit light that made this assembly afraid, while Vaiḍūrya emitted light that made this assembly joyful? It is simply because what was appropriate for transformation differed. How did it differ? Boundless was about to come to symbolize the noble extinction, desiring to make this assembly aware of the worldly unrest; hence he made the assembly afraid. Now the light emitted by this Vaiḍūrya was for the purpose of revealing the Dharma to make the assembly realize and enter it; supreme benefit was about to arrive, so he made the assembly joyful.