## Mishnah Oholot Chapter 13

###### Mishnah Oholot 13:1
[Mishnah Oholot 13:1](https://torahapp.org/share/book/Mishnah%20Oholot/r/13:1)

הָעוֹשֶׂה מָאוֹר בַּתְּחִלָּה, שִׁעוּרוֹ מְלֹא מַקְדֵּחַ גָּדוֹל שֶׁל לִשְׁכָּה. שְׁיָרֵי הַמָּאוֹר, רוּם אֶצְבָּעַיִם עַל רֹחַב הַגּוּדָל. אֵלּוּ הֵן שְׁיָרֵי הַמָּאוֹר, חַלּוֹן שֶׁסְּתָמָהּ וְלֹא הִסְפִּיק לְגָמְרָהּ. חֲרָרוּהוּ מַיִם אוֹ שְׁרָצִים אוֹ שֶׁאֲכָלַתּוּ מַלַּחַת, שִׁעוּרוֹ מְלֹא אֶגְרוֹף. חָשַׁב עָלָיו לְתַשְׁמִישׁ, שִׁעוּרוֹ פוֹתֵחַ טֶפַח. לְמָאוֹר, שִׁעוּרוֹ מְלֹא מַקְדֵּחַ. הַסְּרִיגוֹת וְהָרְפָפוֹת מִצְטָרְפוֹת כִּמְלֹא מַקְדֵּחַ, כְּדִבְרֵי בֵית שַׁמַּאי. בֵּית הִלֵּל אוֹמְרִים, עַד שֶׁיְּהֵא בְמָקוֹם אֶחָד מְלֹא מַקְדֵּחַ. לְהָבִיא הַטֻּמְאָה וּלְהוֹצִיא הַטֻּמְאָה. רַבִּי שִׁמְעוֹן אוֹמֵר, לְהָבִיא הַטֻּמְאָה, אֲבָל לְהוֹצִיא אֶת הַטֻּמְאָה בְּפוֹתֵחַ טָפַח:

**Sefaria Community Translation:**
One who makes a skylight initially, its size [to spread impurity] is the thickness of the drill of the Temple chamber. The remainder of the skylight is two fingers high by a width of one thumb. What is the remainder of the skylight? A window which was closed up but not completely finished. If it was bored away by water or vermin or if salt corroded it, its size is a fistful. If he thought he would use it, its size is a handbreadth's space, if [he wanted it just] for light, its size is that of a large drill. Lattices and gratings combine to make the thickness of a drill according to Beit Shammai, but Beit Hillel say until there is in one place the thickness of a drill. [This size is enough] to spread impurity and to allow for impurity to exit. Rabbi Shimon says to spread impurity, but to allow for impurity to exit requires a handbreadth's space.


###### Mishnah Oholot 13:2
[Mishnah Oholot 13:2](https://torahapp.org/share/book/Mishnah%20Oholot/r/13:2)

חַלּוֹן שֶׁהִיא לַאֲוִיר, שִׁעוּרָהּ מְלֹא מַקְדֵּחַ. בָּנָה בַיִת חוּצָה לָהּ, שִׁעוּרָהּ בְּפוֹתֵחַ טֶפַח. נָתַן אֶת הַתִּקְרָה בְאֶמְצַע הַחַלּוֹן, הַתַּחְתּוֹן בְּפוֹתֵחַ טֶפַח, וְהָעֶלְיוֹן מְלֹא מַקְדֵּחַ:

**Sefaria Community Translation:**
A window which is used for air, its size is the thickness of a drill. If he built a house outside it, its size is a handbreadth's space. If he put a roof in the middle of the window, the lower part is a handbreadth's space and the upper part is the thickness of a drill.


###### Mishnah Oholot 13:3
[Mishnah Oholot 13:3](https://torahapp.org/share/book/Mishnah%20Oholot/r/13:3)

הַחוֹר שֶׁבַּדֶּלֶת, שִׁעוּרוֹ מְלֹא אֶגְרוֹף, דִּבְרֵי רַבִּי עֲקִיבָא. רַבִּי טַרְפוֹן אוֹמֵר, בְּפוֹתֵחַ טֶפַח. שִׁיֵּר בָּהּ הֶחָרָשׁ מִלְּמַטָּן אוֹ מִלְמַעְלָן, הֱגִיפָהּ וְלֹא מֵרְקָהּ, אוֹ שֶׁפְּתָחַתּוּ הָרוּחַ, שִׁעוּרוֹ מְלֹא אֶגְרוֹף:

**Sefaria Community Translation:**
A hole in a door, its size is a fistful says Rabbi Akiva. Rabbi Tarfon says it is a handbreadth's space. If the carpenter left it on the bottom or on top, or if he closed it but did not finish it or if the wind opened it, its size is a fistful.


###### Mishnah Oholot 13:4
[Mishnah Oholot 13:4](https://torahapp.org/share/book/Mishnah%20Oholot/r/13:4)

הָעוֹשֶׂה מָקוֹם לְקָנֶה, וּלְאִסְפָּתִי, וּלְנֵר, שִׁעוּרוֹ כָּל שֶׁהוּא, כְּדִבְרֵי בֵית שַׁמַּאי. בֵּית הִלֵּל אוֹמְרִים, בְּפוֹתֵחַ טֶפַח. לָזוּן אֶת עֵינָיו, וּלְדַבֵּר עִם חֲבֵרוֹ, וּלְתַשְׁמִישׁ, בְּפוֹתֵחַ טָפַח:

**Sefaria Community Translation:**
One who makes a place for a rod or for a spike or a candle, its size is even a minute amount, say Beit Shammai, but Beit Hillel say it is a handbreadth's space. [If he wanted it] to satisfy his eyes, to talk to his friend, or to use, it must be a handbreadth's space.


###### Mishnah Oholot 13:5
[Mishnah Oholot 13:5](https://torahapp.org/share/book/Mishnah%20Oholot/r/13:5)

אֵלּוּ מְמַעֲטִין אֶת הַטֶּפַח. פָּחוֹת מִכַּזַּיִת בָּשָׂר מְמַעֵט עַל יְדֵי רֹבַע עֲצָמוֹת, וּפָחוֹת מֵעֶצֶם כַּשְּׂעֹרָה מְמַעֵט עַל יְדֵי כַזַּיִת בָּשָׂר. פָּחוֹת מִכַּזַּיִת מִן הַמֵּת, פָּחוֹת מִכַּזַּיִת מִן הַנְּבֵלָה, פָּחוֹת מִכָּעֲדָשָׁה מִן הַשֶּׁרֶץ, פָּחוֹת מִכַּבֵּיצָה אֳכָלִים, הַתְּבוּאָה שֶׁבַּחַלּוֹן, וְכָכַי שֶׁיֶּשׁ בָּהּ מַמָּשׁ, וְנִבְלַת הָעוֹף הַטָּהוֹר שֶׁלֹּא חִשַּׁב עָלֶיהָ, וְנִבְלַת עוֹף הַטָּמֵא שֶׁחִשַּׁב עָלֶיהָ וְלֹא הִכְשִׁירָהּ, אוֹ הִכְשִׁירָהּ וְלֹא חִשַּׁב עָלֶיהָ:

**Sefaria Community Translation:**
The following reduce the size of a handbreadth. [A piece the size of] less than an olive of flesh reduces with a *Rova* [specific unit of volume] of bones, and a bone less than a barley grain reduces with [a piece the size of] an olive of flesh. [A piece the size of] less than an olive of a corpse or [a piece the size of] less than an olive of a carcass or [a piece the size of] less than a lentil of a vermin, or [a piece the size of] less than an egg of food, grain that is in a window, a spiderweb that has substance, the carcass of a bird which he did not decide [to eat], the carcass of an impure bird which he decided [to eat] but did not make susceptible to impurity or he made it susceptible but did not decide [to eat] it.


###### Mishnah Oholot 13:6
[Mishnah Oholot 13:6](https://torahapp.org/share/book/Mishnah%20Oholot/r/13:6)

אֵלּוּ שֶׁאֵינָן מְמַעֲטִים. אֵין הָעֶצֶם מְמַעֵט עַל יְדֵי עֲצָמוֹת, וְלֹא בָשָׂר עַל יְדֵי בָשָׂר, וְלֹא כַזַּיִת מִן הַמֵּת, וְלֹא כַזַּיִת מִן הַנְּבֵלָה, וְלֹא כָעֲדָשָׁה מִן הַשֶּׁרֶץ, וְלֹא כַבֵּיצָה אֳכָלִים, וְלֹא תְבוּאָה שֶׁבַּחַלּוֹנוֹת, וְלֹא כָכַי שֶׁאֵין בָּהּ מַמָּשׁ, וְלֹא נִבְלַת הָעוֹף הַטָּהוֹר שֶׁחִשַּׁב עָלֶיהָ, וְלֹא נִבְלַת עוֹף הַטָּמֵא שֶׁחִשַּׁב עָלֶיהָ וְהִכְשִׁירָהּ, וְלֹא הַשְּׁתִי וְהָעֵרֶב הַמְנֻגָּעִים, וְלֹא לְבֵנָה מִבֵּית הַפְּרָס, דִּבְרֵי רַבִּי מֵאִיר. וַחֲכָמִים אוֹמְרִים, הַלְּבֵנָה מְמַעֶטֶת, מִפְּנֵי שֶׁעֲפָרָהּ טָהוֹר. זֶה הַכְּלָל, הַטָּהוֹר מְמַעֵט, וְהַטָּמֵא אֵינוֹ מְמַעֵט:

**Sefaria Community Translation:**
The following do not reduce: A bone does not reduce with other bones, nor does meat with other meat, nor [a piece the size of] an olive of a corpse or [a piece the size of] an olive of a carcass or [a piece the size of] a lentil of a vermin, nor [a piece the size of] an egg of food, nor grain that is in windows, nor a spiderweb that does not have substance, nor the carcass of a pure bird that he decided [to eat], nor a carcass of an impure bird that he decided [to eat] and made susceptible to impurity, nor the warp or weft that have [impure] spots, nor a brick from a *Beit Pras* [a field in which a grave has been plowed over], says Rabbi Meir. The Sages say the brick does reduce because its dust is pure. This is the rule, what is pure reduces and what is impure does not reduce.