仁王護國般若波羅蜜多經疏 3.234

3.234

解曰：十慧觀者，即十行也，慧即別境能觀之心，修行施等十勝行也。然十行者，謂施戒等修起名行。行法圓滿，故說為十。總言十行，帶數得名。即行之行，自他異故。然別名者，若云施等當體彰名云歡喜等，約用為目、出體辨人，如前住故。從此第二別明十行。文分為十：且初第一明歡喜行。

The commentary explains: "Ten wisdom contemplations" are precisely the ten practices. Wisdom is the contemplating mind among the specific mental factors (viniyata), which cultivates the ten superior practices such as giving. Now, as for the "ten practices," they are called "practices" because giving, morality, and so on are cultivated and aroused. Because the dharmas of practice are complete, they are spoken of as ten. Generally called the "ten practices," they derive their name from the number. They are the practices of practice, because self and other differ. As for their distinct names: when called giving and so forth, the name manifests from the intrinsic essence; when called joy and so forth, the designations are based on function, revealing the essence and distinguishing the persons, like the abidings above. From here, the second part distinctively clarifies the ten practices. The text is divided into ten: first, clarifying the practice of joy.