Talmud - Nedarim 12a נדרים י״ב א׳

But notar and piggul are conditions that apply after the sprinkling of the blood, when the prohibition against misusing consecrated property, which the individual is attempting to extend to a permitted item, no longer applies. Since the vow takes effect, this proves that the individual is associating the object of his vow with the original forbidden status of the offering.

Rav Huna, son of Rav Natan, said to him: It is possible to say that it is speaking here about notar of a burnt-offering. Since a burnt-offering may not be eaten even after its blood is sprinkled, the original prohibition against misusing consecrated property continues to apply to the meat of this offering. Rava said to Rav Huna, son of Rav Natan: If so, let it teach explicitly that the individual referred to the meat of a burnt-offering.

The Gemara responds: The tanna is speaking utilizing the style of: It is not necessary. It is not necessary to state that if one associates the object of his vow with meat of a burnt-offering, it is forbidden, as he extends the status of an offering to the other item. However, if one extends the status of notar and piggul of a burnt-offering, it is necessary to say that the other item is forbidden.

It could enter your mind to say that the individual intended to declare the item forbidden like the prohibition of notar or like the prohibition of piggul, and this would be like one who associates the object of his vow with an item that is forbidden by the Torah rather than an item forbidden by means of a vow. Consequently, the item is not forbidden, as one can take a vow by associating the object of his vow with a forbidden item only if that item is itself prohibited due to a vow. The mishna therefore teaches us that his intention is to transfer the prohibition of the offering, and the vow takes effect.

The Gemara raises an objection based upon the following baraita: Which is the vow of prohibition [issar] mentioned in the Torah? It is a case where one said: I hereby declare that I will not eat meat and I will not drink wine today like the day his father died, referring to the father of the individual making the vow, as there is a custom to fast on the anniversary of a parent’s death, or: Like the day his teacher died, as one mourns his primary teacher like a father, or: Like the day Gedaliah, son of Ahikam, was killed (see Jeremiah, chapter 41), i.e., the Fast of Gedaliah, or: Like the day I saw Jerusalem in its state of destruction. And Shmuel said: And this is if he was obligated by a previous vow to abstain from meat and wine on that day that he refers to in his declaration.

The Gemara clarifies: What are the circumstances? Is it not a case where, for example, it was Sunday, the same day of the week on which his father died? And although there were many permitted Sundays in the interim, nevertheless, when he said he would not eat meat or drink wine like the day of the week on which his father died, his intention was to the particular Sunday when his father died, when he had vowed to abstain from meat and wine, and therefore the tanna teaches that it is prohibited. Learn from this that he associates the object of his vow with the original halakhic status of the Sunday his father died, and not the status of the intervening Sundays. Similarly, in the case of peace-offerings following the sprinkling of the blood, he is referring to the original status of the meat before the sprinkling of the blood.

The Gemara responds that this is how the comment of Shmuel was stated: Shmuel said: And this is if he was continuously obligated by a vow from that day forward to abstain from meat and wine on the anniversary of his father’s death. Consequently, when he associates another day with the day of his father’s death, he expresses a vow based upon the current status of the day, and there is no proof with regard to the case of the meat of the peace-offering.

The Gemara cites another attempted proof. Ravina said: Come and hear that which was taught in the mishna (13b): If one declares an item to be like the ḥalla of Aaron, i.e., the portion of dough given to the priests, or like his teruma, the portion of agricultural produce given to priests, the item remains permitted. Although these items are prohibited to non-priests as soon as they are designated, they are considered forbidden by the Torah rather than forbidden by a vow. The Gemara infers: But if one declares an item to be like the teruma of the loaves of the thanks-offering, i.e., the four loaves of the thanks-offering that were eaten by the priests, the item is forbidden.

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

Nedarim 12a examines how vows invoking notar or piggul from a burnt-offering can extend forbidden status to another item under Torah-based prohibition.