Nazir 9: People Know What a Nazir Is

Chapter 2: One who uses unusual expressions in taking on nezirut (for example, including refraining from dried figs in the vow), and whether that has impact on the assumption of nezirut. A machloket between Beit Hillel and Beit Shammai. Also, specific definitions of the korbanot mitigate against just deciding whatever sacrifice one wanted to offer, for example. Misspeaking for such a thing is allowable to some extent, but the vow for nezirut is expected to comply with the definition, as people know what a nazir is, and shouldn't have introduced external details.