Chapter 2 · Central kushyot & analysis

The "asher to’vad" derashah and its limits (27a)

Lesson 11 of 24 20 min

The verse (Deut 22) says: "which is lost from him and you found it." Chazal derive: "lost - not deliberately left." Learn the sugya’s halakhic derivation method and what it excludes.

Lesson goals

01Recognize the structure of an exclusionary derashah
02See how a verse generates a halakhic boundary
03Map three cases excluded by the derashah

Building a Boundary: 'Asher To'vad' – Not Deliberately Left

We begin our journey into the heart of the sugya in Bava Metzia, where we will construct the halakhic foundations of returning lost objects. We start with the foundational verse.

דברים כב:א-ג

לֹא תִרְאֶה אֶת שׁוֹר אָחִיךָ אוֹ אֶת שֵׂיוֹ נִדָּחִים וְהִתְעַלַּמְתָּ מֵהֶם הָשֵׁב תְּשִׁיבֵם לְאָחִיךָ. וְאִם לֹא קָרוֹב אָחִיךָ אֵלֶיךָ וְלֹא יְדַעְתּוֹ וְאָסַפְתּוֹ אֶל תּוֹךְ בֵּיתֶךָ וְהָיָה עִמְּךָ עַד דְּרֹשׁ אָחִיךָ אֹתוֹ וַהֲשִׁבֹתוֹ לוֹ. וְכֵן תַּעֲשֶׂה לַחֲמֹרוֹ וְכֵן תַּעֲשֶׂה לְשִׂמְלָתוֹ וְכֵן תַּעֲשֶׂה לְכָל אֲבֵדַת אָחִיךָ אֲשֶׁר תֹּאבַד מִמֶּנּוּ וּמְצָאתָהּ לֹא תוּכַל לְהִתְעַלֵּם.

You shall not see your brother's ox or his sheep straying and ignore them; you shall surely return them to your brother. And if your brother is not near you, or you do not know him, then you shall gather it into your house, and it shall be with you until your brother seeks it, and you shall return it to him. And so shall you do for his donkey, and so shall you do for his garment, and so shall you do for any lost item of your brother, which is lost from him, and you find it; you shall not be able to ignore it.

The Torah commands us to return 'any lost item of your brother, which is lost from him.' Chazal, in their wisdom, expound upon every word. The phrase 'asher to'vad' (which is lost) is not incidental.

1Let's focus on the word 'to'vad' (is lost).
2We ask: What is its precise meaning here?
3We understand it comes to teach a boundary: only that which was actively lost, not that which was abandoned or deliberately placed.

An Exclusionary Derashah: What Stays Outside?

בבא מציעא כז ע"א

תלמוד בבלי מסכת בבא מציעא דף כז עמוד א: 'אשר תאבד' – פרט לאבדה מדעת.

Babylonian Talmud, Tractate Bava Metzia 27a: 'asher to'vad' – this excludes a deliberately lost item.

The Gemara interprets the verse and sharpens the boundary of the obligation. The word 'to'vad' comes to exclude. It narrows the scope of the mitzvah.

Insight

The derashah 'asher to'vad' – this excludes a deliberately lost item – is a cornerstone in the laws of returning lost objects. It defines the type of lost item subject to the mitzvah, and excludes many other cases.

Exceptional Cases: Three Examples

We will now map three classic scenarios that are excluded from the obligation by this derashah. These are cases where the find is not considered a 'lost item' for the purpose of return.

אבידה מדעתAveidah MiDa'at

An item that the owner deliberately placed in a certain spot, and then forgot it or its location. This is not 'lost' in the sense of the verse.

הפקרHefker

An object that the owner explicitly despaired of and relinquished ownership. This is not an item 'which is lost from him,' but rather an item the owner abandoned.

נח מנה ופרסיהNach Mana U'farsiya

A person who placed money or an object in a public, exposed place ('parsiyah') and did not guard it. This is not a lost item, but rather abandonment or extreme negligence that exempts the finder from returning it.

Decoding and Application: When Are We Obligated to Return?

Understanding the derashah 'asher to'vad' is a key tool for decoding many sugyot in the laws of lost objects. It allows us to distinguish between a state of 'true loss' and other cases.

Insight

The Torah does not impose an obligation for every found item. It obligates only in specific cases where the owner lost their object unknowingly and still desires it. This is the moral and halakhic basis behind the derashah.

We must build this understanding carefully, as it impacts our responsibilities as finders and our rights as those who have lost something.

Vocabulary from the dictionary

Each word links to the full dictionary entry - source, translation, and grammar.

Practice

Write the verse by hand, mark the derived word, and list three cases left outside.

Lesson wrap-up

A derashah is no word-play - it is a surgical cut into the boundary of obligation.

Check your understanding

Test yourself before marking the lesson complete.

Question 1 of 4

What is the central derashah derived from the words 'asher to'vad' in the verse?

Previous lessonAvedah mi-da’at - is it even a "lost" item? (25b)

Next lessonRashi - close reading of the text