四分律行事鈔資持記 2.231

2.231

答中，初文。境雖過者，怨家死也；非非過者，斬截事存也。非雖不亡，望今淨戒，禁之不生，還成未起，故曰猶是等；猶是者，如云還同也。此釋順成古解，戒防未起之義。

In the answer, the first text. "Although the realm is past": the enemy is dead; "the wrongdoing is not past": the matter of dismemberment remains. Although the wrongdoing has not perished, viewed from the perspective of the present pure precepts, prohibiting it from arising still constitutes what has not yet arisen; hence it says "it is still..." and so forth; "it is still" means that it is like saying it is the same again. This explanation accords with and confirms the ancient understanding that the meaning of precepts is preventing what has not yet arisen.