All equivalent terms [used] in nezirus are like nezirus. One who says: “I will be” —- is a nazir; or, “I will be handsome” —- [is] a nazir. “Nazik,” “naziach,” “paziach” —- he is a nazir.  [One who says:] “I am like this one,” “I am to stroke [my hair],” “I am to let [my hair] grow,” “It is [an obligation] upon me to let [my hair] grow long” —- he is a nazir.  [If he says:] “It is [an obligation] upon me [to offer] birds” —- R’ Meir says: [He is] a nazir. But the Sages say: He is not a nazir.

[One who says:] “I am a nazir from grape-seeds,” or “. . . from grape-skins,” or “. . . from haircuts,” or “. . . from tumah” —- he is a nazir, and all the details of nezirus apply to him.  [One who says:] “I am like Samson,” “like the son of Manoach,” “like the husband of Delilah,” “like him who tore out the gates of Gaza,” “like him whom the Philis- tines gouged out his eyes” —- he is a Samsonian nazir.  What is the difference between a permanent nazir and a Samsonian nazir? A permanent nazir —- if his hair [grows] heavy, he may lighten it with a razor, and bring three animals; and if he becomes tamei, he brings the sacrifice for tumah. A Samsonian nazir —- if his hair [grows] heavy, he may not lighten it; and if he becomes tamei, he does not bring the sacrifice for tumah.

Standard nezirus is for thirty days.  If he said: “I am a nazir [for] one large [term],” [or] “I am a nazir [for] one small [term],” [or] even “. . . from here until the end of the world” —- [he is] a nazir for thirty days.  [One who says:] “I am a nazir and one day,” [or] “I am a nazir and one hour,” [or] “I am a nazir one [term] and a half” —- he is a nazir for two [terms].  [If he says:] “I am a nazir for thirty days and one hour,” [he is] a nazir for thirty-one days, because one cannot extend nezirus by hours.

[If he says:] “I am a nazir [as much] as the hair on my head,” or “the dust of the earth,” or “the sand of the sea” —- he is a nazir forever, and he shaves [his head] once every thirty days. Rabbi says: This one does not shave [his head] once every thirty days. Who is the one that shaves [his head] once every thirty days? One who says: “Let there be [an obligation] of nezirus upon me [as much] as the hair of my head,” or “as the dust of the earth,” or “as the sand of the sea.’’

[If one says:] “I am a nazir a houseful,” or “a boxful,” we examine him. If he says: “I declared one large nezirus” —- [he is] a nazir for thirty days. But if he says: “I declared an unspecified nezirus” —- we regard the box as if it were filled with mustard seeds, and he is a nazir all his days.

[If one says:] “I am a nazir from here until such and such a place,” we calculate how many days’ [journey] it is from here until that place. If it is less than thirty days —- he is a nazir for thirty days; and if not —- he is a nazir for that number of days.

[If one says:] “I am a nazir like the number of days of the solar [year],” he counts [terms of] nezirus like the number of days of the solar [year]. R’ Yehudah said: There was an incident, and when he concluded, he died.

[If one says:] “I am a nazir from dried figs,” or “from pressed figs” —- Beis Shammai say: [He is] a nazir. But Beis Hillel say: He is not a nazir. R’ Yehudah said: Even what Beis Shammai said, they did not say except for one who says: “They are for me a sacrifice.”

[If] he said: “This cow said, `I am a nazir if I stand up,’ ” [or] “This door said, `I am a nazir if I open’ ” —- Beis Shammai say: [He is] a nazir. But Beis Hillel say: [He is] not a nazir. R’ Yehudah said: Even what Beis Shammai said, they did not say except for one who says, “This cow is for me a sacrifice if it stands up.”

[If] they poured a cup for him, and he said: “I am a nazir from it” —- he is a nazir. It once happened with a certain woman who was inebriated, that they poured a cup for her, and she said, “I am a nazir from it.” The Sages said: She did not intend other than to say, “It is for me [like a] sacrifice.’’

[If one says:] “I am a nazir on condition that I [be permitted to] drink wine,” or “contract tumah from the dead” —- he is a nazir and is prohibited in all of them. [If he says:] “I know that there is nezirus, but I did not know that a nazir is forbidden wine” —- he is forbidden. But R’ Shimon permits [him]. “I know that a nazir is forbidden wine, but I thought that the Sages would permit it for me since I cannot live without wine,” or “since I bury the dead” —- he is permitted. But R’ Shimon forbids [him].

[If one says:] “I am a nazir, and it is [an obligation] upon me [to provide for] a nazir to shave [his head],” and his friend heard [him] and said, “And I, and it is [an obligation] upon me [to provide for] a nazir to shave [his head]” —- if they are clever, they [provide for] each other [to] shave, and if not, they [must provide for] other nezirim [to] shave.

[If he says:] “It is [an obligation] upon me [to provide for the] shaving of half a nazir,” and his friend heard [him] and said, “And I, it is [an obligation] upon me [to provide for the] shaving of half a nazir” —- this one must [provide for the] shaving of a complete nazir, and this one must [provide for the] shaving of a complete nazir; [these are] the words of R’ Meir. But the Sages say: This one provides half [of the sacrifices needed] to shave a nazir, and this one provides half [of the sacrifices needed] to shave a nazir.

7. [One who says:] “I am a nazir when a son will be [born] to me,” and a son was born to him —- he is a nazir. [If] a daughter, or one of unknown gender, or an androgyne was born to him —- he is not a nazir. If he said: “When I shall see that there will be [born] to me a child” —- even [if there] is born to him a daughter, or one of unknown gender, or an androgyne —- he is a nazir.

[If] his wife lost the baby, he is not a nazir. R’ Shimon says: He should say: “If it was [a] viable [child], I am a nazir by [previous] obligation, but if not, I am a nazir voluntarily.” [If] she again gave birth, he is a nazir. R’ Shimon says: He should say: “If the first was viable, the first [nezirus] was obligatory, and this one is voluntary; but if not, the first [nezirus] was voluntary, and this one is obligatory.”