Chapter 3 · Toladot & Rabbinic laws

Two who performed it together

Lesson 23 of 28 18 min

If one cannot perform the melakhah alone but two together can - are both liable? Mishnah (Shabbat 92b): "Two who performed it - exempt." When is liability divided and when is each exempt.

Lesson goals

01Distinguish "neither alone could" from "each alone could"
02Understand Rambam vs. Ra'avad
03Apply to carrying a heavy bed

Building the Foundation: 'Two Who Performed It' – Exempt

Our journey through Shabbat laws brings us to a fascinating principle: what happens when a forbidden melakhah is performed by two people together? The Mishnah presents a foundational rule we must decode.

משנה שבת צב, ב

שנים שעשאוה - פטורין

Two who performed it – exempt.

This rule, in its simplicity, seems surprising. Is it possible that performing a forbidden melakhah by two people exempts them from penalty? The key to understanding this rule lies in the details: what type of melakhah is it, and what is each partner's ability to perform it alone?

Insight

The Mishnah does not say 'permitted,' but 'exempt.' The exemption here is not a permission, but an exemption from a specific penalty – a sin-offering. The melakhah is still forbidden by Torah law.

Decoding the Categories: 'Neither Alone Could' vs. 'Each Alone Could'

Let's construct the framework for understanding this rule. Our Sages distinguish between two main scenarios, and this is the cornerstone for differentiating between liability and exemption.

1Scenario A: 'Neither alone could' – Neither partner is capable of performing the melakhah alone. Only together can they succeed.
2Scenario B: 'Each alone could' – Each partner is capable of performing the melakhah alone, but they chose to do it together.

שיעורShiur

The minimum quantity required for a melakhah to incur a sin-offering.

The difference between these two scenarios is critical. In the Mishnah, the rule 'two who performed it are exempt' primarily refers to the first scenario, 'neither alone could,' where the melakhah could not have been performed by an individual at all.

The Rishonim's Debate: Rambam vs. Ra'avad

Now, let's dive deep into the discussion and see how the great halakhic decisors interpret the rule and what the practical implications are.

רמב"ם הלכות שבת א, טז

שנים שעשו מלאכה אחת פטורין, אף על פי שכל אחד מהן יכול לעשותה לבדו. וכן שנים שהוציאו חפץ אחד פטורין, אף על פי שכל אחד מהן יכול להוציאו לבדו. וכן כל כיוצא בזה. וכל זה כשאין שיעור באחד מהן לבדו, אלא שניהם ביחד עשו שיעור.

Two who performed one melakhah are exempt, even if each of them could have performed it alone. And similarly, two who carried out one object are exempt, even if each of them could have carried it out alone. And so too for all similar cases. All this is when there is no shiur (minimum measure) in one of them alone, but both together performed a shiur.

Kushya

Rambam rules that even in 'each alone could,' they are exempt, as long as neither alone performed a complete shiur. This seems counter-intuitive! After all, each contributes to the melakhah.

Terutz

The Ra'avad disputes Rambam. In his opinion, if 'each alone could' – both are liable! Only if 'neither alone could' – are they exempt. Ra'avad requires each to perform 'half a shiur' to be liable, or that the melakhah could not have been performed at all without both of them.

Practical Application: Carrying a Heavy Bed

Let's take a concrete example to understand the dispute and its practical implications in Jewish law.

Suppose two people carry a heavy bed from a private domain to a public domain on Shabbat. The bed is so heavy that one person cannot lift it at all. Only both of them together are capable.

הוצאהHotza'ah

One of the 39 melakhot of Shabbat, transferring an object from one domain to another.

1According to Rambam: Both are exempt. Why? Because neither of them performed a complete 'shiur' of carrying out alone. The 'shiur' (carrying out an object) was only performed by both of them together.
2According to Ra'avad: Both are exempt. Why? Because this is a case of 'neither alone could.' The melakhah could not have been performed by an individual at all, and therefore there is no sin-offering liability.

The difference becomes sharper when each could do it alone, but they chose to do it together. For example, two people carry a light chair. According to Rambam - exempt. According to Ra'avad - liable!

Practice

Describe a "two who did it" scenario at home. Who is liable per Rambam?

Lesson wrap-up

This halakha shows Shabbat reckons with the individual and the partnership.

Check your understanding

Test yourself before marking the lesson complete.

Question 1 of 4

What is the basic rule from the Mishnah regarding 'two who performed it'?

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