法華玄義釋籤 17.61

17.61

次發心中還以一念無作四諦為境，約此而起慈悲。文又為三：初正明弘誓，次「無緣」下結成誓體，謂無緣也。無偏小雜故名「清淨」。三「慈善」下結誓成相。

Next, in generating the [bodhi-]mind, one still takes the uncreated four truths within a single thought as the object, and arouses loving-kindness and compassion based on this. The text also has three: first, directly showing the great vows; second, from "unconditioned" onward, concluding the substance of the vows, meaning that they are unconditioned (there being no mixture of the biased or small, it is called "pure"); third, from "benevolence and goodness" onward, concluding the vows into their characteristics.