仁王護國般若經疏 4.9

4.9

問：若無明未盡，應是煩惱。何故前文佛與菩薩同入此定？答：無明之性即是於明，如燈生時即同滅時，只以一念無明心變為明，微明即菩薩、大明即佛也。

Question: If ignorance is not yet exhausted, it should be affliction. Why does the preceding text state that buddhas and bodhisattvas enter this concentration together? Answer: The nature of ignorance is itself illumination, just as when a lamp arises, it is simultaneously when [darkness] ceases; it is merely that a single thought of the ignorant mind transforms into illumination—faint illumination is the bodhisattva, and great illumination is the buddha.