妙法蓮華經玄贊 6.66

6.66

贊曰：此頌悲生喻。入宅救之悲生名驚。隨順生死，名入火宅。由此入故後亦與子同時方出，循環赴救不顧其難，名宜救濟，應時濟故。

The Commentary says: This verse is the metaphor of the arising of compassion. Entering the mansion to rescue them, compassion arises, which is called "in shock." Complying with life-and-death is called "entering the burning house." Because of entering thus, he later emerges together with the children at the same time; circling around to rescue them without regard for the danger is called "urgently planning to rescue," because he delivers them in accord with the proper time.