And Rav Yehuda bar Ami says in the name of Rav Yehuda: A beit haperas that has been trodden underfoot, thereby creating a path, is pure, and one no longer needs to be concerned about bones, as the entire prohibition is a stringency by rabbinic law. Nevertheless, a priest who walks through such a field may not partake of teruma until he has purified himself.

Alternatively, the Gemara suggests that the mishna is referring to a case where the priest becomes impure with other forms of impurity, with regard to which priests are not admonished. A priest is prohibited from becoming impure only through contact with a corpse. Yet, he may not partake of teruma if he becomes impure even in any other manner.

§ The mishna teaches: If the one examining the firstborn, or the judge, or the witness, was an elderly person, the one who required his services transports him on a donkey. And in all these cases, although it is prohibited to take wages, the one who required his services gives him his wages like the wages of a laborer, as he was unable to perform his usual labor that day. The Sages taught (Tosefta, Bava Metzia 4:11): The owner gives him his wage as if he were an idle laborer. Abaye says: It means that he is paid as a laborer who is idle from that typical labor of his from which he is kept idle. In other words, he must receive the amount of money a person would be willing to accept to refrain from his current occupation and engage in the actions discussed in the mishna. This calculation accounts for both the degree of difficulty of his steady employment and the amount of his remuneration.

MISHNA: In the case of one who is suspect with regard to firstborn animals of slaughtering them and selling their meat when it is prohibited to do so, one may neither purchase meat from him, including even deer meat, nor may one purchase from him hides that are not tanned. Rabbi Eliezer says: One may purchase hides of female animals from him, as the halakhot of firstborn animals are in effect only with regard to males. And one may not purchase bleached or dirty wool from him. But one may purchase spun thread from him, and all the more so may one purchase garments from him.

GEMARA: The mishna teaches that one may not purchase from him even deer meat. The Gemara explains that the reason is that it could be confused with meat of a calf, as they are similar in appearance.

The mishna teaches: Nor may one purchase from him hides that are not tanned. The Gemara infers from here that we may purchase tanned hides from one who is suspect with regard to firstborn animals. The reason is that if it is so that it is a hide of a firstborn, he would not make such an effort with it to tan it. This is because he would think: If the Sages hear that this hide is from a firstborn, they will cause me a loss by confiscating it from me.

The mishna teaches that Rabbi Eliezer says: One may purchase hides of female animals from him, as the halakhot of firstborn animals are in effect only with regard to males. The Gemara asks: What is the reason? People know the difference between the hide of a male animal and the hide of a female animal, due to the differences in anatomy.

The Gemara asks: But if so, according to the first tanna, why is it prohibited to purchase hides of female animals from one who is suspect with regard to firstborn animals? The Gemara answers that the first tanna claims as follows: If so, i.e., if it is permitted to purchase hides of female animals, one might also come to sell hides of male animals, as he will sever the male reproductive organ and say that mice ate this part of the hide. The Gemara asks: And the other, Rabbi Eliezer, why is he not concerned that one might cut off that part of the hide and sell it as the hide of a female? The Gemara answers that Rabbi Eliezer maintains that the place of the mice is known, i.e., one can tell by looking at the hide whether it was eaten by mice or cut with a knife.

§ The mishna teaches: And one may not purchase bleached or dirty wool from him. The Gemara asks: Now that the mishna has taught that we may not purchase bleached wool from him, despite the fact he has expended effort in bleaching it, which indicates that it is not from a firstborn, is it necessary to teach that one may not purchase dirty wool from him? The Gemara answers: Rather, the tanna is teaching one case here, that of wool that was bleached and cleaned from its dirt.

The mishna teaches: But one may purchase spun thread from him, and all the more so one may purchase garments from him. The Gemara asks: Now that the mishna has taught that we may purchase spun thread from one who is suspect with regard to firstborn, is it necessary to teach that one may purchase garments? The Gemara answers: What does the mishna mean which it says: Garments? It is referring to felt [namtei] garments, which are not made of spun thread.

MISHNA: In the case of one who is suspect with regard to the Sabbatical Year, i.e., of sowing or engaging in commerce with Sabbatical-Year produce, one may not purchase flax from him, and this applies even to combed flax, in which much labor and exertion was invested. But one may purchase spun thread and woven fabric from such individuals.

GEMARA: The Gemara asks: Now that the mishna has taught that we may purchase spun thread from one who is suspect with regard to the Sabbatical Year, is it necessary to teach the case of woven fabric? The Gemara answers: What does the mishna mean when it says: Woven? It means wool woven into chains, which is not spun.

MISHNA: In the case of one who is suspect with regard to selling teruma under the guise of non-sacred produce, one may not purchase even water and salt from him; this is the statement of Rabbi Yehuda. Rabbi Shimon says: One may not purchase from him any item that has relevance to teruma and tithes. However, one may purchase water and salt from him, as teruma and tithes do not apply to them.

GEMARA: The Gemara asks: What is added by Rabbi Shimon’s statement that one may not purchase any item that has relevance to teruma and tithes from one who is suspect with regard to selling teruma? The Gemara answers: Rabbi Shimon’s statement serves to add fish innards to this prohibition, as people mix olive oil with them, and it might be oil of teruma.

The Gemara relates: There was a certain butcher who was suspected of selling