Talmud - Me'ilah 20a מעילה כ׳ א׳

If he gave the stone or the beam to another, he is liable for its misuse and the other person is not liable for its misuse. If he built the stone or the beam into his house, he is not liable for its misuse until he resides beneath it and derives benefit equal to the value of one peruta from it.

If one took for his use a consecrated peruta, that person is not liable for its misuse. If he gave the peruta to another, he is liable for its misuse and the other person is not liable for its misuse. If he gave the peruta to a bathhouse attendant [levallan], although he did not bathe, he is liable for misuse of the peruta. The reason is that at the moment he receives the peruta, the attendant in effect says to the owner of the peruta: The bathhouse is open before you, enter and bathe. The benefit derived from that availability is worth one peruta.

One’s consumption of half of a peruta of consecrated food and another’s consumption of half of a peruta of consecrated food that the first person fed him; and likewise one’s benefit of half of a peruta derived from a consecrated item and another’s benefit of half of a peruta derived from a consecrated item that the first person provided him; and similarly one’s consumption and another’s benefit derived or one’s benefit derived and another’s consumption, all these join together to constitute the requisite measure of one peruta for liability for misuse, and that is the halakha even if much time has passed between these various acts of consumption and deriving of benefit.

GEMARA: The mishna teaches that if one takes a stone or a beam belonging to the Temple treasury, he is not liable for misuse, but if he gives it to another he is liable for misuse. The Gemara asks: What is different with regard to him retaining possession of the item, and what is different with regard to him giving it to another, that he is rendered liable when he gives it to another? Shmuel said: We are dealing with a treasurer [begizbar] of the Temple, to whom the consecrated property is given. Since all the consecrated property is meant to be in his possession and charge, he is not guilty of misuse, provided that he does not transfer it to another.

§ The mishna teaches: If he built the stone or the beam into his house, he is not liable for its misuse until he resides beneath it and derives benefit equal to the value of one peruta from it. The Gemara asks: Why do I need the mishna to state that the individual is not liable until he resides beneath it? That is not precise, as once he has changed it, by chiseling it for the purpose of fitting it into the structure, he has already committed misuse. Rav says: In this instance, the individual in question did not change the item in order to build with it. Rather, this is referring to a case where he placed it upon a window. Since mere placement does not constitute a change, there is no misuse until he lives beneath it.

The Gemara notes: And nevertheless, once he built it and subsequently derived benefit from it, in any event he has committed misuse. Although the halakha is that misuse does not apply to items that are attached to the ground, this does not apply to an item built into a structure. Let us say that this statement supports the opinion of Rav, as Rav said: With regard to one who prostrates himself to a house in an act of idolatry, he renders the house prohibited. The house assumes the status of a worshipped item, from which one may not derive benefit. Notwithstanding the halakha that an item attached to the ground does not become prohibited as an object of idolatry, the house does not assume the status of an item attached to the ground, since it is built of materials that were earlier detached from the ground.

Rav Aḥa, son of Rav Ika, said: The mishna does not necessarily support the opinion of Rav. It can be claimed that the item is subject to misuse even if one maintains that a detached item which becomes attached gains the status of an attached item, in accordance with the opinion that if someone worships a house, he does not render it prohibited. Nevertheless, in the case of the stone or beam the individual is liable for misuse, due to another principle: With regard to misuse, the Torah prohibited all benefit that appears readily to the eyes, e.g., one who uses consecrated property as building materials. It makes no difference that the item is now attached to the ground.

The Gemara suggests another proof for Rav’s opinion that an item which was previously detached and then becomes attached to the ground retains the status of a detached item. Let us say that a baraita supports the opinion of Rav: With regard to one who resides in a house consecrated to the Temple treasury, once he derives benefit from the house he has committed misuse. Evidently, the built house is considered detached, which is why it is subject to misuse. Reish Lakish said: This baraita does not support the opinion of Rav either. There, the baraita is speaking of a case where he consecrated the detached building materials and ultimately built the house. Since the items were detached when he consecrated them, the prohibition of misuse applies even if they were subsequently attached to the ground.

In light of Reish Lakish’s interpretation, the Gemara objects: But if he built the house and ultimately sanctified it when it was attached to the ground, what is the halakha? Evidently, he has not committed misuse. If so, why does the tanna of the baraita run specifically to teach the subsequent case: With regard to one who resides in a consecrated house of a cave, i.e., a domicile that has always been attached and was not built from detached components, he has not committed misuse, as an attached item is not subject to misuse. Why does the baraita mention this very different case? Let the baraita say simply: With regard to one who resides in a stone house, which he built and ultimately sanctified, he has not committed misuse.

The Gemara explains: One can say that although the tanna could have taught the case of the built house instead of a cave, he preferred to mention a cave, as this case of the cave is conclusive for him. Under all circumstances, one who lives in a consecrated cave is exempt from misuse, because the cave was always attached to the ground. By contrast, that case of the built house is not conclusive for him, as a consecrated house is not always exempt from misuse. If the house is built from previously consecrated materials, one who lives within it is liable for misuse.

MISHNA: With regard to an agent who performed his agency properly, if he was tasked to make use of a particular item, and the one who appointed him forgot that it was a consecrated item, the homeowner, who appointed him, is liable for misuse of the consecrated item, as the agent acted on his behalf. Contrary to other cases of agency, where the guiding principle is that there is no agency in the performance of a transgression, and the agent is liable, in this case there is agency, and the homeowner is liable for the action of the agent. But if he did not perform his agency properly, the agent is liable for misuse of the consecrated item, as once the agent deviates from his agency, he ceases to be an agent, and his actions are attributable to him.

How so? If the homeowner said to the agent: Give meat to the guests, and he gave them liver; or if he said: Give them liver, and he gave them meat, the agent is liable for misuse of the consecrated item, as he deviated from his agency. If the homeowner said to the agent: Give them meat, a piece for this guest and a piece for that guest, and the agent says: Each of you take two pieces, and each of the guests took three pieces, all of them are liable for misuse. The homeowner is liable for their consumption of the first piece of meat, as with regard to that piece his instructions were fulfilled. The agent is liable for the second piece, which he added to the instructions of the homeowner. Finally, the guests are liable for the third piece, which they took at their own initiative beyond the instructions of the agent.

Traduction : The William Davidson digital edition of the Koren Noé Talmud, with commentary by Rabbi Adin Even-Israel Steinsaltz.

Meila 20a explores liability for misusing consecrated items like stones, coins, and food, and how partial benefits combine to reach the punishable threshold.