仁王護國般若波羅蜜多經疏 3.248

3.248

解行名者，善修勝行，不滯空有，名無著行，擇法為性也。達有如幻者，達諸有為如幻不實。如經說云「觀諸法如幻、諸佛如影、菩薩行如夢、佛說法如響、世間如化。」由了此等不著空有。方便行也。從此第八明難得行。

Explaining the name of the practice: Skillfully cultivating superior practices without stagnating in emptiness or existence is called the practice of non-attachment; investigation of dharmas is its nature. "Realizing that existence is like an illusion": realizing that conditioned things are like an illusion and unreal. As the sūtra says: "Contemplating dharmas as like illusions, buddhas as like shadows, bodhisattva practices as like dreams, the Buddha expounding the Dharma as like echoes, and the world as like transformations." Through understanding these, one is not attached to emptiness or existence. This is the practice of skillful means. From here, the eighth clarifies the practice of difficult attainment.