Yoma 101

בכור ומעשר דחלין על בעל מום קבוע ואין יוצאין לחולין ליגזז וליעבד אלא שם זבח לא קתני

the first-born and the tithe of cattle, the laws of which affect even a permanently blemished animal, and which are not available [on redemption] for profane use to be subjected to shearing or work. Hence [you must say] he does not deal with [whatever goes by] the name of an original sacrifice.<span class="x" onmousemove="('comment',' But with one particular type of original sacrifice.');">¹</span>

ומאי שנא תמורה שם תמורה אחת היא זבח איכא בכור ואיכא מעשר

Why is it different with substitute animals? - The substitutes all have uniform rules, whereas the original sacrificial animal includes first-born and tithe for cattle. Now, as to R'Shesheth, why does he refer the teaching to the ram of Aaron, let him rather refer to the paschal lamb, which suspends the laws of the Sabbath and of levitical uncleanness and can have a substitute because it is an individual's sacrifice? -He holds that a paschal lamb is never offered for one individual.<span class="x" onmousemove="('comment',' This is the view of R. Judah (Pes. 91a) , there being always more than one to subscribe to the cost of the paschal lamb, which must be eaten up within its prescribed limited time, Ex. XII, 10.');">²</span>

ולרב ששת אדמוקים לה באילו של אהרן לוקמה בפסח דדוחה את השבת ואת הטומאה ועושה תמורה דקרבן יחיד הוא קסבר אין שוחטין הפסח על היחיד

Then let him put the case as dealing with the second paschal lamb? - Is that able to suspend the laws of levitical impurity? Said R'Huna the son of R'Joshua to Raba: Why does the Tanna<span class="x" onmousemove="('comment',' Supra 50a.');">³</span>

ונוקמיה בפסח שני מי דחי טומאה

designate the paschal lamb an individual's sacrifice and the festal offering a community sacrifice? Would you say because the latter is offered up by large crowds?<span class="x" onmousemove="('comment',' I.e., on festivals when there are many pilgrims in the Temple.');">⁴</span>

אמר ליה רב הונא בריה דרב יהושע לרבא ותנא מ"ש פסח דקרי ליה קרבן יחיד ומ"ש חגיגה דקרי לה קרבן ציבור אי משום דאתי בכנופיא פסח נמי אתי בכנופיא איכא פסח שני דלא אתי בכנופיא

So is the paschal lamb offered up by large crowds. - There is the second paschal lamb, which is not offered up by large crowds.

אמר ליה אם כן יהא דוחה את השבת ואת הטומאה אמר ליה אין כמאן דאמר דחי דתניא פסח שני דוחה את השבת ואינו דוחה את הטומאה ר' יהודה אומר אף דוחה את הטומאה מ"ט דתנא קמא אמר לך מפני טומאה דחיתו ויעשה בטומאה

Said he to him: If so,it ought to suspend the laws of Sabbath and those of levitical impurity.<span class="x" onmousemove="('comment',' Since the reference is to the second paschal lamb. MS.M.: ' (how state that) it suspends the law of Sabbath!'');">⁵</span> - He answered: Yes, he holds in accord with him who says that it suspends [them].

ורבי יהודה אמר לך אמר קרא (במדבר ט, יב) ככל חקת הפסח יעשו אותו ואפילו בטומאה התורה החזירה עליו לעשותו בטהרה לא זכה יעשנו בטומאה

For it was taught: The second paschal lamb suspends the Sabbath, but not the laws of levitical impurity.<span class="x" onmousemove="('comment',' Pes. 95b.');">⁶</span> R'Judah says: It suspends also the laws of levitical impurity. What is the reason for the view of the first Tanna? He will tell you: 'You have postponed it<span class="x" onmousemove="('comment',' The offering of the paschal lamb,v. Num. IX, 11.');">⁷</span> only because of levitical impurity, how then shall it suspend the laws of levitical impurity!' And R'Judah? -He will tell you: Scripture says: According to all the statute of the passover shall they keep it,<span class="x" onmousemove="('comment',' Ibid. IX, 12.');">⁸</span> i.e., even in levitical impurity. The Torah gave him an opportunity to do it in levitical purity, but if he was not privileged to do so, let him do it even in impurity. [