大乘義章 12.7

12.7

次辨遮性。五中前四遠離性罪，後之一戒防禁遮惡。前離性罪是其戒體，後離遮惡是助戒法。又前戒體是其所護，後一助法是其能護。所護如菓，能護之者如似薗牆，論說如是（此二門竟）。

Next is to distinguish prohibited versus intrinsic [evil]. Among the five, the first four are keeping far from intrinsic offenses (svabhāva-sāvadya), and the final precept prevents and forbids prohibited evil (pratiṣiddha-sāvadya). The former, abstaining from intrinsic offenses, is the precept-essence; the latter, abstaining from prohibited evil, is an auxiliary practice for the precepts. Furthermore, the former precept-essence is what is protected, and the latter auxiliary practice is that which protects. What is protected is like fruit; that which protects is like an orchard wall. Such is what the treatises say. (This completes the second gate.)