大般涅槃經義記 5.334

5.334

上來正明所成是大，自下第二舉小顯大。「先得世間四無量心，然後乃發三菩提心方得出世」，正明菩薩從小入大。「因世」已下總以結之。

The above directly explains that what is accomplished is great. Below is the second part: bringing up the small to reveal the great. "First obtaining the worldly four immeasurable minds, and then subsequently generating the mind of bodhi, one only then comes to transcend the worldly" directly explains the bodhisattva's entering the great from the small. From "conditioned by the worldly" onward, it summarizes and concludes.