The Gemara answers: When Rav says his statement, he is referring to not every student, but only those such as Rav Kahana and Rav Asi, who needed to learn the halakhic traditions of Rav, but they did not need to learn the reasoning of Rav, as they were capable of conducting their own analysis.

Rabbi Abbahu says: There are ten ways in which cases of monetary law are different from cases of capital law, as was taught in the beginning of the chapter, and none of them is practiced with regard to a court hearing concerning an ox that is to be stoned, as it is treated as a case of monetary law, except for the requirement that the animal be judged by twenty-three judges, like in cases of capital law.

The Gemara asks: From where are these matters derived? Rav Aḥa bar Pappa says: As the verse states: “You shall not incline the judgment of your poor in his cause” (Exodus 23:6). He explains: You may not incline the judgment of, i.e., exert effort to find liable, your poor, but you may incline the judgment of an ox that is to be stoned. The reason for the procedural differences between cases of monetary law and cases of capital law is to render it more likely that one accused of a capital transgression will be acquitted. This is not a factor when judging the ox.

The Gemara asks: Are there really ten ways in which cases of monetary law are different from cases of capital law? There are only nine differences recorded in the mishna. The Gemara questions this: But the mishna teaches ten differences, not nine. The Gemara clarifies: Although there appear to be ten, there are in fact nine, because the halakha that not all are fit to judge cases of capital law and the halakha that twenty-three judges are required for cases of capital law are one. The reason not all are fit to judge cases of capital law is that the court of twenty-three is derived from the command to Moses: “And they shall bear the burden of the people with you” (Numbers 11:17), which indicates that only those “with you,” i.e., similar in lineage to Moses, can serve on that court (see 17a).

The Gemara answers: But there is another difference, as it is taught in a baraita (Tosefta 7:5): The court does not seat on the Sanhedrin a very old person or one who is castrated or one who has no children, as those who did not recently raise children may lack compassion. Rabbi Yehuda adds: Even a cruel person is not eligible. The Gemara comments: And the opposite of this is the halakha with regard to one who entices others to engage in idol worship, as the Merciful One states concerning him: “Neither shall you spare, neither shall you conceal him” (Deuteronomy 13:9).

§ The mishna teaches that all are fit to judge cases of monetary law. The Gemara asks: What is added by the mishna’s employing the expansive term all? Rav Yehuda says: It serves to include a child born from an incestuous or adulterous relationship [mamzer] in the category of those qualified to judge cases of monetary law.

The Gemara questions this explanation: But we already learn this halakha one time, as it is taught in a baraita: All who are fit to judge cases of capital law are fit to judge cases of monetary law, but there are those who are fit to judge cases of monetary law and are not fit to judge cases of capital law. And we discussed it: What is included in the expansive term all employed by the baraita? And Rav Yehuda says: It serves to include a mamzer. The Gemara responds: One of the two sources serves to include a convert, who is qualified to judge only in cases of monetary law, and one of the two sources serves to include a mamzer.

The Gemara comments: And both the mishna and baraita are necessary, as the halakha taught by one source cannot be derived from the halakha taught by the other source. As, if the tanna taught us the fitness to judge cases of monetary law only with regard to a convert, one could say that a convert is like a born Jew concerning this, since he is fit to enter into the congregation, i.e., marry a Jew of fit lineage, but with regard to a mamzer, who is not fit to enter into the congregation, say that he cannot serve as a judge. And if the tanna taught us the fitness to judge cases of monetary law only with regard to a mamzer, one could say that a mamzer is fit to judge, as he came from seed of unflawed lineage, but with regard to a convert, who does not come from seed of unflawed lineage, say that he cannot serve as a judge. Therefore, both sources are necessary.

§ The mishna teaches: But not all are fit to judge cases of capital law; the judges may be only priests, Levites, or Israelites who are of sufficiently fit lineage to marry their daughters to members of the priesthood. The Gemara asks: What is the reason for this? The Gemara explains: As Rav Yosef taught: Just as the court is clean in justice, so too, it is clean of any blemish, i.e., it does not include anyone of flawed lineage. Ameimar says: What is the verse from which it is derived? It states: “You are all fair, my love; and there is no blemish in you” (Song of Songs 4:7).

The Gemara asks: But perhaps you should say that this is referring to an actual blemish, and is teaching that one who has a physical blemish cannot be appointed to the Sanhedrin. Rav Aḥa bar Ya’akov says: It is not necessary to learn from this verse the halakha that one who has a physical blemish cannot be appointed to the Sanhedrin, as the verse states in connection with the transfer of the Divine Spirit from Moses to the Elders: “That they may stand there with you” (Numbers 11:16). The term “with you” is explained to mean: With similarity to you, teaching that the members of the Sanhedrin must be whole in body, like Moses.

The Gemara rejects this proof: But perhaps there, those who were with Moses had to be free of any blemish due to the Divine Presence, which was going to rest upon them, but this is not a requirement for judges to serve on the Sanhedrin. Rather, Rav Naḥman bar Yitzḥak says: The verse states: “So shall they make it easier for you and bear the burden with you” (Exodus 18:22). The term “with you” is explained to mean: They shall be similar to you, without blemish. This verse is referring to the appointment of regular judges, upon whom the Divine Presence does not rest, and teaches that all members of the Sanhedrin must be whole in body, and the verse from Song of Songs teaches that they must have unflawed lineage as well.

MISHNA: A Sanhedrin of twenty-three was arranged in the same layout as half of a circular threshing floor, in order that all the judges will see one another and the witnesses. And two judges’ scribes stand before the court, one on the right and one on the left, and they write the statements of those who find the accused liable and the statements of those who acquit the accused. Rabbi Yehuda says: There were three scribes. One writes only the statements of those who acquit the accused, one writes only the statements of those who find him liable, and the third writes both the statements of those who acquit the accused and the statements of those who find him liable, so that if there is uncertainty concerning the precise wording that one of the scribes writes, it can be compared to the words of the third scribe.