淨名經集解關中疏 1.436

1.436

"Why is this? I recall that formerly, the Buddha briefly expounded the essentials of the Dharma for the monks." The second is explaining briefly, in two parts. This is the first, the Buddha first expounding briefly. Sengzhao says: The Tathāgata constantly expounded briefly that conditioned dharmas are impermanent, suffering, empty, and without self, and that unconditioned dharmas are tranquil, extinguished, and unmoving. These two statements summarize all dharmas completely, hence it says "briefly." Daosheng says: Serving as a ford for awakening, like going out through a door.