Kiddushin 25B

כתנאי: ״ומעוך וכתות ונתוק וכרות״⁠ – כולן בביצים, דברי רבי יהודה.

The Talmud comments that the first question with regard to castration of the testicles is like a dispute between tanna’im. It is stated with regard to animals that cannot be used as offerings due to blemishes: “That whose stones are bruised, or crushed, or torn, or cut you should not sacrifice to YHWH” (Leviticus 22:24). All of these blemishes are referring to the animal’s testicles; this is the statement of R' Yehuda.

בביצים ולא בגיד? אלא: כולן אף בביצים, דברי רבי יהודה. רבי אליעזר בן יעקב אומר: כולם בגיד. רבי יוסי אומר: ״מעוך וכתות״⁠ – אף בביצים, ״נתוק וכרות״⁠ – בגיד ⁠– אין, בביצים ⁠– לא.

The Talmud asks: Could R' Yehuda possibly mean that these blemishes apply only to the testicles and not to the penis? Certainly these should also be considered blemishes if they affect the penis, which is more exposed than the testicles. Rather, this is what the baraita is saying: All of these blemishes apply to the testicles also; this is the statement of R' Yehuda. R' Eliezer ben Ya’akov says: All of them apply only to the penis. R' Yosei states the following distinction: “Bruised or crushed” applies to the testicles also. Conversely, when there are areas that are “broken or cut” on the penis, yes, these are considered a blemish, but on the testicles, no, they are not a blemish.

מתני׳ בהמה גסה נקנית במסירה, והדקה בהגבהה, דברי רבי מאיר ורבי אליעזר. וחכמים אומרים: בהמה דקה נקנית במשיכה.

Mishnah: A large domesticated animal is acquired by passing, when its current owner transfers it to a buyer by giving him the reins or the bit. And a small domesticated animal is acquired by lifting. This is the statement of R' Meir and R' Eliezer. And the Rabbis say: A small domesticated animal can be acquired by pulling also, and there is no need to lift it.