Blemishes, Fines, and Credibility in Firstborn Offerings

How the Rambam determines the boundaries of rabbinic fines, deliberate blemishes, and the credibility of witnesses.

The Core Dilemmas of the Daf

The Gemara on Bekhorot 35 analyzes when a בכור (firstborn kosher animal) may be slaughtered. An unblemished firstborn belongs to the sacred realm and must be offered in the Temple. Outside the Temple, it may only be slaughtered and eaten if it develops a disqualifying מוּם (blemish).

This rule creates temptation. A person might deliberately blemish an animal to eat it, so the Sages imposed a קְנָס (rabbinic penalty) forbidding an intentionally blemished firstborn. The Gemara explores whether this penalty outlives the wrongdoer, whether defensive actions count as intentional blemishes, and who is deemed trustworthy to testify that an injury occurred naturally,,.

Rabbinic Penalties Die with the Wrongdoer

The opening sugya cites a rule from Abaye regarding הֶזֵּק שֶׁאֵינוֹ נִיכָּר (non-evident damage). If someone contaminates another person's ritually pure food and dies before paying, the court does not collect the damages from his estate. Because invisible damage is not actionable under biblical law, liability is solely a rabbinic fine.

The Rambam codifies this principle as a general rule governing rabbinic penalties. The Maggid Mishneh notes that the Rambam draws this ruling from Gittin and the Rif's formulation in Bava Kamma. The Sages aimed their penalty only at the willful wrongdoer, so an innocent heir never pays.

לְפִיכָךְ אִם מֵת זֶה שֶׁהִזִּיק הֶזֵּק שֶׁאֵינוֹ נִכָּר אֵין גּוֹבִין הַנֵּזֶק מִנְּכָסָיו שֶׁלֹּא קָנְסוּ חֲכָמִים אֶלָּא זֶה שֶׁעָבַר וְהִזִּיק.

For this reason, if the person who caused damage that is not noticeable dies, the penalty is not expropriated from his estate. For our Sages enforced this penalty only upon the person who transgressed and caused the damage. (Mishneh Torah, One Who Injures a Person or Property 7:3)

Defensive Kicking and Intentional Injury

The Mishnah permits slaughtering a firstborn if the animal pursued a person and he kicked it, inflicting a blemish. The Rambam rules that the animal is permitted even if he kicked it because it had pursued him previously. The Kessef Mishneh notes that the Rambam adopts the second version of Rav Pappa's statement.

The Rosh questioned this leniency because inflicting a blemish violates a biblical prohibition. In defense, the Kessef Mishneh explains that disqualifying the animal from consumption is only a rabbinic enactment. Where a person acts in response to danger, the Sages declined to enforce their penalty.

Credibility and Household Witnesses

Regarding testimony, all kohanim are suspect of intentionally causing blemishes in their own firstborn animals to consume them. Even a חָבֵר (an associate scrupulous in mitzvot) is not believed regarding his own animal.

However, the Rambam rules that a kohen may testify on behalf of another kohen. We do not suspect reciprocal collusion, because of the presumption that no person sins for another,. Following Rabban Shimon ben Gamliel, the Rambam accepts the testimony of the owner's children,. The wife alone is disqualified because she is considered like the owner himself,.

The Rambam adopts the first version of the dispute between Rabbi Yochanan and Rabbi Elazar. A kohen employed as a shepherd by an Israelite is not believed, because he expects to receive the animal. The Lechem Mishneh explains that the second version relies on an unconvincing assumption about owner habits that conflicts with an earlier sugya.

כֹּהֵן שֶׁהֵעִיד לְכֹהֵן אַחֵר שֶׁמּוּם זֶה מֵאֵלָיו נָפַל נֶאֱמָן וְאֵין חוֹשְׁשִׁין לָהֶן שֶׁמָּא הֵם גּוֹמְלִים זֶה אֶת זֶה.

The word of a priest who testifies on behalf of another priest that a firstborn became blemished on its own accord is accepted. We do not suspect that they are acting in collusion with each other. (Mishneh Torah, Firstlings 2:17)

Animal Tithes and Practical Application

By contrast, any person may testify about blemishes on מַעֲשַׂר בְּהֵמָה (animal tithes). An expert owner may even inspect his own tithed animal. The Gemara explains that he could lawfully blemish his entire herd before separating the tithe,. Since he had an easy permitted route, we do not suspect him of deceit,.

In practice, a firstborn animal today may be blemished before birth or slaughtered on an accidental blemish. When an injury arises, independent witnesses or household children are believed, but the owner and his wife cannot validate the blemish alone.

Rabbinic penalties penalize only deliberate wrongdoers during their lifetimes, while testimony remains valid whenever personal gain and spousal identity are absent.

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