Nazir 30: Wait for Elijah
Finishing chapter 4... with a new mishnah. A man can use his father nezirut funds for the final korbanot but a daughter cannot. But in general, a son cannot use his father's funds for his own offerings - this is an exception. Also, a series of questions at the end of the Gemara in that mishnah, with particulars about cases of nezirut, for which the Gemara does not have answers.