Someone who declared himself a nazir while in a cemetery —- even if he was there for thirty days, they are not reckoned for him in the count [of his term], and he does not bring the sacrifice for tumah. [If] he left and re-entered, they are reckoned for him in the count, and he does bring the sacrifice for tumah. R’ Eliezer says: Not on that same day, as it says: But the first days shall be forfeit (Numbers 6:12) —- until there are first days.

Someone who declared a nezirus of long duration and completed his [term of] nezirus, and afterward came to the Land [of Israel] —- Beis Shammai say: He is a nazir for thirty days. But Beis Hillel say: [He is] a nazir as at first. It happened with Queen Helena that her son went to war, and she declared, “If my son returns in peace from the war I shall be a nezirah for seven years.” Her son returned from the war, and she was a nezirah for seven years. At the end of seven years she went up to the Land [of Israel], and Beis Hillel ruled for her that she must be a nezirah for another seven years. At the end of [these] seven years she became tamei, and so it resulted that she was a nezirah for twenty-one years. R’ Yehudah said: She was a nezirah for only fourteen years.