MISHNA: As a continuation to the discussion at the end of the previous chapter, which mentioned circumcision in the context of a discussion of the halakhot of childbirth on Shabbat, the mishna continues to address the halakhot of circumcision. Rabbi Eliezer says: If he did not bring an implement for circumcising the child on Shabbat eve, he brings it on Shabbat itself uncovered so that it will be clear to all that he is bringing a circumcision scalpel. And in times of danger, when decrees of persecution prohibit Jews from circumcising their children, one covers it in the presence of witnesses who can testify that he transported the scalpel to perform a mitzva. And furthermore, Rabbi Eliezer said with regard to this issue: One may even cut down trees to prepare charcoal in order to fashion iron tools for the purpose of circumcision. Rabbi Eliezer’s approach was not universally accepted, and a principle was stated by Rabbi Akiva: Any prohibited labor that can be performed on Shabbat eve does not override Shabbat, including transporting the circumcision scalpel. However, any prohibited labor involved in the mitzva of circumcision itself that cannot be performed on Shabbat eve overrides Shabbat.

The Gemara departs from the facilitators of circumcision to the halakha of circumcision itself and asks: The Rabbis only disagree with Rabbi Eliezer with regard to actions that facilitate circumcision, which, in their view, do not override Shabbat; however, with regard to circumcision itself, everyone agrees that it overrides Shabbat. From where do we derive this halakha? Ulla said: This is a halakha transmitted to Moses from Sinai, but there is no biblical basis for it. And so too, Rabbi Yitzḥak said: It is a halakha transmitted to Moses from Sinai.

Rather, Rabbi Elazar said: This halakha is derived by means of a verbal analogy between the word sign that appears with regard to circumcision: “And you shall be circumcised in the flesh of your foreskin; and it shall be a sign of the covenant between Me and you” (Genesis 17:11), and sign that appears with regard to Shabbat: “However, you shall keep My Shabbatot, for it is a sign between Me and you throughout your generations” (Exodus 31:13). From this verbal analogy, it is derived that circumcision, which is a sign, may be performed even on Shabbat, which is itself a sign. The Gemara asks: But if what you say is so, phylacteries, with regard to which the term sign is also written: “And it shall be for a sign on your hand and for frontlets between your eyes” (Exodus 13:16), should also override Shabbat, and they should be donned on that day. Rather, this principle is derived by means of a different verbal analogy from the word covenant that appears with regard to circumcision: “And you shall be circumcised in the flesh of your foreskin; and it shall be a sign of the covenant between Me and you” (Genesis 17:11), and the word covenant that appears with regard to Shabbat: “The children of Israel shall keep the Shabbat, to observe the Shabbat throughout their generations for a perpetual covenant” (Exodus 31:16). The Gemara raises a difficulty: If this is so, then the circumcision of an adult should also be permitted on Shabbat and it should not be limited to a child on the eighth day, as the term covenant is written with regard to him as well, as it applies to any Jewish male not yet circumcised. Therefore, let his circumcision override Shabbat. The halakha, however, is that only circumcision at its proper time on the eighth day overrides Shabbat. Rather, this halakha is derived by means of a verbal analogy between the word generations that appears with regard to Shabbat: “Throughout their generations for a perpetual covenant” (Exodus 31:16), and the word generations that appears with regard to circumcision: “And I shall establish My covenant between Me and you, and between your seed after you throughout their generations, for an everlasting covenant” (Genesis 17:7). The Gemara asks: If so, let ritual fringes too, with regard to which the term generations is also written, override Shabbat, and it should be permitted to affix ritual fringes to a garment on Shabbat. Rather, Rav Naḥman bar Yitzḥak said: This halakha is derived not from one common word alone, but one derives it based upon the three words sign, covenant, and generations that appear with regard to circumcision, from sign, covenant, and generations that appear with regard to Shabbat, to the exclusion of these, i.e., ritual fringes and phylacteries, that with regard to each of them, one of these is written but not all three words together.

The Gemara raises an objection from that which was taught in the Tosefta: From where is it derived that saving a life overrides Shabbat? Rabbi Elazar ben Azarya says it is derived from the mitzva of circumcision: Just as circumcision, which pertains to only one of a person’s limbs, overrides Shabbat, all the more so it is an a fortiori inference that saving a life, which is a mitzva that pertains to the entire person, overrides Shabbat.

The LORD spoke to Moses, saying, “Phinehas, son of Eleazar son of Aaron the priest, has turned back My wrath from the Israelites by displaying among them his passion for Me, so that I did not wipe out the Israelite people in My passion. Say, therefore, ‘I grant him My pact of friendship.

We learned in the mishna that one sucks blood from the wound after the circumcision was performed on Shabbat. Rav Pappa said: A craftsman who does not suck the blood after every circumcision is a danger to the child undergoing circumcision, and we remove him from his position as circumcisor. The Gemara comments: This is obvious. Given that one desecrates Shabbat to suck the blood, which involves performance of a prohibited labor, obviously, failure to do so poses a danger. Desecration of Shabbat would not be permitted if it was not a life-threatening situation. The Gemara answers: This is not an absolute proof. Lest you say that this blood is collected and contained in place, and one who removes that which is pooled in its place does not perform the subcategory of the prohibited labor of threshing on Shabbat, i.e., drawing blood; that is the reason sucking the blood is permitted, not due to any danger involved in failing to do so. Therefore, the mishna teaches us that this blood is attached and flowing and not merely pooled. One who draws it out performs an act that is generally prohibited by Torah law on Shabbat, and it is nonetheless permitted due to danger to the child.

We learned in the mishna: And on Shabbat one places on the wound from the circumcision a bandage. Abaye said: My nurse said to me: A bandage for all wounds should be made from seven parts fat and one part wax. Rava said: A bandage should be made from wax and sap of a tree.

God further said to Abraham, “As for you, you and your offspring to come throughout the ages shall keep My covenant. Such shall be the covenant between Me and you and your offspring to follow which you shall keep: every male among you shall be circumcised.