妙法蓮華經玄義 2.64

2.64

At the time of subtle awakening, penetratingly knowing that outside the dharma realm there are no phenomena and thereby discussing cutting off: this explains cutting off in terms of the gate of existence. That this cutting off is also cut off: this explains cutting off in terms of the gate of emptiness. Like a swift horse seeing the shadow of the whip, there is none that fails to enter; this is named the subtlety of cutting off relativity. Using these two subtleties, one subtilises the three phenomena above. The phenomena of sentient beings also possess the two subtleties and are called subtle. The Buddha-dharma and the phenomena of mind also possess the two subtleties and are called subtle.