仁王護國般若波羅蜜多經疏 3.328

3.328

解曰：方便妙用者，達俗智也，體具四德故云妙用。非倒者，雖帶相緣，不顛倒故。非住者，萬行皆修，非住一故。非動者，緣前如智，不散動故。非靜者，乘大智悲，修無住故。又初異外道，次異凡天，動靜二種異於二乘，彼無此智不同此故。從此第三二智一異。

The commentary explains: "Skillful wondrous functioning" refers to the cognition that penetrates the conventional; because its essence possesses four virtues, it is called "wondrous functioning." "Neither inverted" means that although it takes objects by bearing characteristics, it is not inverted. "Nor abiding" means that all myriad practices are cultivated, not abiding in just one. "Neither moving" means that in taking the preceding suchness and cognition as objects, it is not scattered or moving. "Nor still" means that mounting great wisdom and compassion, it cultivates without abiding. Furthermore, the first distinguishes it from non-Buddhists, the next distinguishes it from ordinary beings and devas, and the two—moving and still—distinguish it from the two vehicles; because they lack this cognition, they are not like this. Hereafter, the third part addresses the identity and difference of the two cognitions.