Nazir

GEMARA. A Tanna taught: [The procedure laid down in the Mishnah] applies only in the case of a short naziriteship,  but in the case of a naziriteship of [say,] a year, he may eat sacred meats [only] after two years, and drink wine and touch the dead after four years,  It has been taught further in connection with this: He must poll four times.  At the first polling he brings a pair of birds, a bird as a sin-offering, and an animal as a burnt-offering.  At the second [polling] he brings a bird as a sin-offering and an animal as a burnt-offering. At the third he [again] brings a bird as a sin-offering and an animal as a burnt-offering. At the fourth he brings the sacrifice [due on terminating the naziriteship] in purity. It has just been said: 'At the first polling he brings etc.' [In this way] whatever the facts are he offers the correct [sacrifice]. For if he was certainly a leper but was not defiled, the pair of birds are [in discharge of] his obligation,  the bird as a sin-offering [is a sacrifice offered] in doubt and is to be buried, and the burnt-offering is a free-will offering. He cannot however be shaved [a second time] seven days hence,  for perhaps he is not a confirmed leper and the All-Merciful has said [of the nazirite]. There shall no razor come upon his head until [the days] be fulfilled.  If, on the other hand, he was not certainly a leper but he was defiled, then the bird as a sin-offering is [in discharge of] his obligation,  the pair of birds, being prepared without [the Temple court]  are not [in the category of] profane [animals] brought into the Temple-court,  whilst the animal as a burnt-offering is a freewill-offering. Finally, if he was neither a leper nor defiled, then the pair of birds are [in any case] prepared without [the Temple-court],  the bird as a sin-offering is to be buried, and the animal as a burnt-offering is [in discharge of] his obligation [as a clean nazirite]. But surely he requires a guilt-offering?  — [The author of this Baraitha] is R. Simeon who says that he brings one and makes a stipulation. At the second and third polling a pair of birds is unnecessary for these have been prepared.  What [doubt] is there [remaining]? That perhaps he was actually a confirmed leper?  [Because of this he offers] one [of the two birds as a sin-offering,]  for the doubt on account of the tale of days  and one for the doubt on account of defilement. At the fourth polling he brings the sacrifice in purity and stipulates