瑜伽論記 24.42

24.42

次明其止。言鋸喻者，此有兩釋：一云，行者縱使用鋸鋸其身，猶能思不報怨也。二云：鋸有斷木之用，無不挫齒，不同刀劍，修忍之時，亦復如是，不可以怨挫忍辱齒，故云鋸喻。修如前說四支所攝不放逸行者，一、善護身，二、善守根，三、善住念，四、得出世間道。

Next, it clarifies calming. As for the phrase "the simile of the saw," there are two explanations. One says: even if practitioners have their bodies sawn with a saw, they can still resolve not to retaliate against hostility. The second says: a saw functions to cut wood, and its teeth are never not blunted, unlike knives and swords; when cultivating patience, it is also like this: one must not blunt the teeth of forbearance with hostility; hence it is called the simile of the saw. As for "cultivating the practice of heedfulness subsumed by the four branches as explained previously": first, guarding the body well; second, guarding the sense faculties well; third, firmly abiding in mindfulness; and fourth, attaining the supramundane path.