More mishnayot! One - a person who makes a vow not to benefit from those who "rest" on Shabbat - who is included and excluded from this category? Or a vow not to benefit from those who eat garlic... Which links back to a decree from Ezra, specifically to eat garlic on Shabbat. Likewise, one who goes up to Jerusalem. All being connected to Jews vs. Kutim. Two - Swearing off benefit from those who are descendants of Noah, which sounds like everyone, but comes to exclude the Jewish people. Three - Swearing off benefit from those who are descendants from Abraham, which sounds like it means at least all of the three main monotheistic religions, but also turns out to exclude the Jewish people. Four - One who swears off benefitting from a Jew... Can one do business with a Jew after that? Five - Swearing off benefit from "arelim," the "uncircumcised ones" does not include an uncircumcised Jewish person. Plus, how this phrasing differs from promising to get benefit from those who are circumcised. Also, a discussion of the circumcision, including how brit milah takes precedence over Shabbat, and how Moshe did wrong in not circumcising his son (Tziporah did it). Plus, the completion or perfection of circumcision for Abraham.