大般若波羅蜜多經般若理趣分述讚 2.41

2.41

讚曰：此中二句義即是能正了知無量無分限相大法光明，得達法界等十方無邊無分量相，故極猗適。顯照行故，名法光明。既能廣達契會法性證真妙理意極猗適，能了此智分明顯照名法光明。此二離垢，故名清淨。

The commentary states: The meaning of these two lines refers to the great radiance of Dharma that correctly and fully understands the signs that are immeasurable and boundless, attaining and reaching the limitless and unmeasured signs of the ten directions equal to the dharmadhātu, and therefore [the mind] is supremely pliant and comfortable. Because it manifests and illuminates practice, it is called "radiance of Dharma." Since one can broadly penetrate and accord with the nature of phenomena, realizing the true and marvelous principle, the mind is supremely pliant and comfortable; and the wisdom that is able to understand this, clearly manifesting and illuminating, is called the "radiance of Dharma." Because these two are free from defilement, they are called "pure."