四分律刪繁補闕行事鈔 1.43

1.43

二以開制往徵，教則通於二世。故下文云：以世尊是一切智人故，制已更開，開已還制，此通未來教也！如《五分》：雖我所制，於餘方不為清淨者，則不應用；雖非我所制，於餘方必應行者，不得不行。此如來在世教也！然二教相融，互兼彼此。

Second, investigating them by allowance and prohibition: the teaching extends through the two ages. Therefore the text below states: "Because the Bhagavat is an omniscient person, after prohibiting he allows again, and after allowing he prohibits again." This is the teaching that applies to the future! As in the Pañcavargika-vinaya: "Although something was prohibited by me, if it is not considered pure in other regions, it should not be applied; although something was not prohibited by me, if it must be practiced in other regions, one cannot but practice it." This was the teaching while the Tathāgata was in the world! Yet these two teachings blend together, mutually encompassing one another.