Nedarim 9: Righteous People Don't Take Vows

A new mishnah! Formulating vows in the style of other vows - like the wicked, like the righteous, like a nazir, like for a korban. Also, defining and distinguishing between Neder and Nedavah. And how does nezirut compare? Plus, the story of Shimon HaTzadik. [Who's Who: Shimon HaTzadik]