大般涅槃經義記 6.56

6.56

見中，初問，次辯，後結。辯中，初言「菩薩修梵」明見所依，「以淨天眼」舉其能見。下明所見，初見眾生造惡下墜，次見眾生修善上昇，後見眾生轉輪出沒。從三塗出，還入三塗，名「闇入闇」；從三塗出，上生人天，名「闇入明」；捨人天身，墜落三塗，名「明入闇」；善趣相入，名「明入明」。

In the seeing, there is first a question, next an analysis, and finally a conclusion. In the analysis, the opening statement, "the bodhisattva cultivates pure conduct," clarifies that upon which seeing relies; "with the pure divine eye" adduces that which is capable of seeing. Below, it clarifies what is seen: first seeing sentient beings committing evil and plunging downward, next seeing sentient beings cultivating good and ascending, and afterwards seeing sentient beings transmigrating, emerging, and submerging. Emerging from the three wretched realms and re-entering the three wretched realms is called "entering darkness from darkness"; emerging from the three wretched realms and ascending to be born among humans or devas is called "entering light from darkness"; relinquishing a human or deva body and plunging into the three wretched realms is called "entering darkness from light"; passing from one wholesome realm into another is called "entering light from light."