יא רבא אמר למעוטי שלא לזווג לה אחרת קודם שלוחיה למאי אי לשחיטה הא בעיא שילוח אלא לשילוח
11 just as with regard to the qualifying and atoning sacrifices prescribed within the Temple, the qualifying sacrifices are equal to the atoning sacrifices, so with regard to the qualifying and atoning sacrifices prescribed outside the Temple, the qualifying sacrifices are equal to the atoning sacrifices!<span class="x" onmousemove="('comment',' And therefore what is regarded as unfit for an atoning sacrifice, e.g. an animal that is trefah or has a physical blemish, may not be used for a qualifying sacrifice. Hence a trefah bird may not be used for the purification rites of a leper, and there is no need for any express term to exclude it.');"><sup>19</sup></span> - Rather said R'Nahman B'Isaac, [The expression 'clean'] serves to exclude the birds of a beguiled city.<span class="x" onmousemove="('comment',' A city whose inhabitants were enticed into idolatry was to be utterly destroyed and everything belonging to it was forbidden absolutely; cf. Deut. XIII, 13ff. The term 'clean' thus excludes the birds of this town from being used in the purification rites of the leper.');"><sup>20</sup></span> But for which one?<span class="x" onmousemove="('comment',' For which of the two birds of the leper's offering could such a bird be used? Cf. Lev. XIV, 4ff, where two birds are prescribed for the leper's offering, one was to be slaughtered whilst the other was to be set free.');"><sup>21</sup></span> If for the one that must be set free, but surely the Torah would not enjoin to set it free if it would thereby lead to transgression!<span class="x" onmousemove="('comment',' Lit., 'for a stumbling-block'. The finder of the bird, not knowing that it originally came from a beguiled city, will eat it, and so be led into sin by another's performance of a precept. On this ground therefore it cannot be suggested that birds from a beguiled city may be used for the leper's offering.');"><sup>22</sup></span>