大般涅槃經集解 43.34

43.34

案僧亮曰：引《雙樹經》稱曾聞人說夫劫火不燒眾生，先有三月並照除眾生病，使得修禪上生。月光既出，無病不愈。其時未至而有妙光，所以喜而問也。答云應故現光，無定相也。非色非非色，雙釋真定相也。非青非黃，偏釋真也。為度眾生者，偏釋應也。

Sengliang notes: He cites the *Twin Trees Sūtra*, stating that he once heard people say that when the fire of the kalpa does not burn sentient beings, first three moons shine together to remove sentient beings' illnesses, enabling them to cultivate dhyāna and be reborn above. Once the moonlight appears, there is no illness that is not cured. That time had not yet arrived, yet there was this wonderful light, which is why he rejoiced and asked about it. The reply states that [the Buddha] manifests light in response [to beings], having no fixed characteristic. Being neither color nor non-color explains both aspects of the true, fixed characteristic. Being neither blue nor yellow explains solely the true. Being for the sake of crossing over sentient beings explains solely the response.