Nedarim 58

Hook

Ever wondered why some forbidden foods can be "diluted" into permissibility while others remain stubbornly forbidden, no matter how much you mix them? It turns out the key isn't just quantity, but the very nature of the prohibition itself, and whether it has a built-in "escape route."

Context

This discussion in Nedarim 58a is deeply rooted in the Sages' meticulous system of halakha, the practical application of Jewish law. Specifically, it grapples with the concept of bittul issur (nullification of a prohibition) within mixtures. The historical context here is crucial: the Temple was central to many of these laws, with prohibitions like terumah and ḥalla directly tied to its service, and second tithe requiring pilgrimage to Jerusalem. The destruction of the Temple, therefore, would have had profound implications for how these laws were understood and applied, pushing the Sages to consider how to manage these sacred (and sometimes forbidden) items in a world without its central locus.

Text Snapshot

"For any item that can become permitted, i.e., a forbidden object whose prohibition can or will lapse, for example, untithed produce that can be permitted through tithing, and second tithe that is permitted through redemption or bringing it to Jerusalem (Deuteronomy 14:24–26), and consecrated items that are also permitted through redemption, and produce of the new crop that is permitted after the sacrifice of the omer offering (Leviticus 23:14), the Sages did not determine a measure for their neutralization, and no mixture with any quantity of permitted items neutralizes their prohibition. And for *any item that cannot become permitted, for example, teruma, and teruma of the tithe, and ḥalla (Numbers 15:20–21); fruit of a tree during the first three years after its planting [ orla]; and forbidden food crops in a vineyard (Deuteronomy 22:9), the Sages determined a measure for their neutralization." (Nedarim 58a)

Close Reading

Insight 1: The Dichotomy of Permissibility

The foundational insight here is the sharp distinction drawn between two categories of forbidden items: those that "can become permitted" (yesh lahem hetirim) and those that "cannot become permitted" (ein lahem hetirim). This isn't just a semantic difference; it dictates the very mechanism of nullification. For the former, even a minuscule amount of the forbidden item in a mixture remains forbidden, regardless of the quantity of permitted food. This is because the prohibition itself is seen as inherently temporary, with a clear path to eventual permissibility. The Sages, in essence, create a "safety net" where the prohibition always retains its power until that designated moment of release.

Insight 2: The "Escape Route" as the Deciding Factor

The examples provided for each category illuminate this "escape route" principle. Untithed produce (tevel) can be permitted by tithing. Second tithe can be redeemed or brought to Jerusalem. Consecrated items can be redeemed. New crop produce becomes permitted after the omer offering. These are not abstract possibilities; they are concrete, divinely ordained pathways to liberation from the prohibition. Conversely, terumah, ḥalla, orlah, and kilayim have no such inherent "release valve." Their prohibition is absolute, and thus, the Sages establish a quantitative standard for their nullification in mixtures, allowing for a majority of permitted food to render the entire mixture permissible.

Insight 3: The Nuance of Sabbatical Year Produce

The Gemara's extended discussion on Sabbatical Year produce (shevi'it) is where the initial dichotomy gets complicated. Initially, it seems to fit the "cannot become permitted" category, as the Mishnah in Shevi'it states it prohibits permitted produce of its species in any amount. However, Rabbi Shimon cleverly argues that shevi'it produce does have a temporal element: it's permitted for consumption only as long as similar produce is still in the field. Once that time passes, its status shifts, and its prohibition becomes subject to quantitative nullification (i.e., imparted flavor). This reveals a deeper layer of understanding: the potential for future permissibility, even if not immediate or absolute, can influence how the prohibition behaves in mixture. This highlights that "can become permitted" isn't always a binary state but can involve degrees of temporality and conditional permissibility.

Two Angles

Rashi's Approach: The Intrinsic Path to Permissibility

Rashi, in his commentary on this passage (e.g., on Nedarim 58a:1:1), emphasizes the inherent nature of the prohibition and its potential for resolution. He explains that items like tevel, second tithe, and consecrated items have "facilitators" (metirin) that can rectify their status. For tevel, this is tithing; for second tithe and consecrated items, it's redemption. Rashi's focus is on whether there's a divinely-ordained mechanism to remove the prohibition itself. If such a mechanism exists, even if not yet enacted, the prohibition retains its stringency in mixtures, preventing nullification by simple dilution. The core idea is that the prohibition's purpose and intended resolution are paramount.

Ran's Approach: The Practicality of Resolution and Its Absence

Rabbeinu Chananel (Ran), on the other hand, seems to lean into a more practical distinction, as seen in his commentary (e.g., on Nedarim 58a:1:3). He notes that for items that "cannot become permitted," the Sages did establish a measure for neutralization. However, he adds a crucial detail: for tevel, while it has a path to permissibility (tithing), its prohibition isn't nullified in mixture because "as its permissibility is, so is its prohibition." This suggests that even when a path to permissibility exists, the intensity or mechanism of the prohibition itself can override simple dilution. Ran also brings in the concept of davar sheyeish lo hetir potentially being nullified by givul (flavor imparting) in certain contexts, indicating a more nuanced view of how mixtures work, depending on the specific item and the context of its prohibition and potential permissibility.

Practice Implication

This distinction between items that can and cannot become permitted has a direct impact on how we handle potentially forbidden foods in our kitchens. For instance, if you have a mixture of untithed produce (tevel) and permissible produce, the Sages' ruling means that even a tiny amount of tevel would render the whole mixture forbidden, because tevel can be permitted through tithing. You can't just "dilute" it away. This reinforces the need for careful separation and diligent tithing. Conversely, if you accidentally mix a small amount of terumah (which cannot become permitted) into a large quantity of permitted food, the terumah is forbidden only if it imparts flavor. This highlights the importance of understanding the specific halakhic category of any forbidden food, as it dictates the rules of engagement for its permissibility.

Chevruta Mini

Question 1: The "Escape Route" and Intent

If an item can technically become permitted, but the individual has no intention of performing the act that would permit it (e.g., not intending to tithe tevel), does it still fall into the "can become permitted" category with its stringent ruling, or does the lack of intent effectively render it like something that "cannot become permitted" in practice?

Question 2: The Sabbatical Year Nuance and Modern Application

Rabbi Shimon's argument about Sabbatical Year produce being permitted based on the presence of produce in the field introduces a temporal condition. In a world where "Sabbatical Year produce" is more of a theoretical category for most, how does this nuanced understanding of temporality and conditional permissibility inform our approach to other halakhic categories that might also have a time-sensitive aspect?