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Questions tagged [maseches-keilim]

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Why are a plow's metal rings used to connect oxen considered integral?

The 21st chapter of tractate Keilim discusses which attachments/pieces of utensils are considered integral so as to be considered connected for tumah purposes. My understanding of the underlying ...
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Have the measurements for tumah changed throughout the ages?

There is discussion among poskim whether we measure a kezayit (and other measurements) using contemporary olives/eggs/etc, or whether we use some larger measurement based on a perceived historical ...
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Why does Rambam change the list of items in Keilim 29:2 that combine for tumah and hazayah?

In the mishnah Keilim 29:2, we see a list of items and an indication of how many can be attached to each other and still be considered joined with regards to tumah and hazayah (sprinkling for ...
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Who compiled tractate Keilim?

The last mishnah in tractate Keilim, mishnah 30:4, ends as follows: אָמַר רַבִּי יוֹסֵי, אַשְׁרַיִךְ כֵּלִים, שֶׁנִּכְנַסְתְּ בְּטֻמְאָה, וְיָצָאת בְּטָהֳרָה. Rabbi Yose said: Happy are you ...
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Why do certain cloth combinations become susceptible to tumah while others don't?

In Keilim 27:3, we see the rule for when a clothes item becomes susceptible to tumah when it's made of different materials, each with a different minimum size to be susceptible to tumah. הָעוֹשֶׂה ...
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Why is a tanner's intention not effective to induce susceptibility to tumah?

In Keilim 26:8, we read about how intention can in some cases bring about susceptibility to tumah. עוֹרוֹת בַּעַל הַבַּיִת, מַחֲשָׁבָה מְטַמֵּאתָן. וְשֶׁל עַבְּדָן, אֵין מַחֲשָׁבָה מְטַמֵּאתָן. ...
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Why is a leather belt susceptible to tumah?

In mishna Keilim 26:3, we see that a leather belt is susceptible to tumah. כַּף לוֹקְטֵי קוֹצִים, טְהוֹרָה. הַזּוֹן וְהַבִּרְכְּיָר, טְמֵאִין. וְהַשַּׁרְווּלִים, טְמֵאִין. וְהַפְּרַקְלִימִין, ...
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Why be stringent on Rabbinic tumah for sacrificial meat?

Chapter 25 of Masechet Keilim deals with the distinctions between insides and outsides of vessels with regards to tumah coming from tamei liquids, which is Rabbinic. If a vessel's exterior becomes ...
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Can toys become tamei?

In mishna Keilim 24:1, we see that a toy shield is not susceptible to tumah: שְׁלֹשָׁה תְרִיסִין הֵם. תְּרִיס הַכָּפוּף, טָמֵא מִדְרָס. וְשֶׁמְּשַׂחֲקִין בּוֹ בַּקֻּנְפּוֹן, טָמֵא טְמֵא מֵת. ...
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Tumah of stuffed objects

In Hilchot Keilim 2:3, Rambam says that objects that have a receptacle that is made only to be (permanently) filled is not susceptible to tumah. בֵּית קִבּוּל הֶעָשׂוּי לְמַלְּאוֹתוֹ אֵינוֹ בֵּית ...
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Why isn't Keilim 20:6 reckoned amongst the stringencies of Beit Hillel and the leniencies of Beit Shammai?

In Keilim 20:6, we see a disagreement between Beit Hillel and Beit Shammai (and Rabbi Akiva) as to when a floor mat (that is susceptible to midras impurity) loses its susceptibility to midras while ...
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Odd choice of language in Keilim 19:4 and 28:6

In Keilim 19:4 and 28:6, we see an unusual (to me) way of describing av hatumah and rishon l'tumah: נִשָּׂא הַזָּב עַל הַמִּטָּה וְעַל הַמִּזְרָן, מְטַמֵּא שְׁנַיִם וּפוֹסֵל אֶחָד, דִּבְרֵי רַבִּי ...
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Why compare zimmun to the tumah of broken/repaired vessels?

In Bavli Brachot 50a-b, Rava compares a rule for a zimmun to a rule for broken/repaired metal utensils. In particular, he says that in the case of three people, each coming from a separate group, ...
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Tumah after deciding not to “finish” an object

In Keilim 16:1, the mishnah asks when wooden utensils are susceptible to tumah. The anonymous mishnah describes a bed or cot, and that it becomes susceptible after sanding; however, if the owner ...
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Tumah of liquids: a question on Bartenura

In several places, the mishna describes how water and blood in the slaughterhouse in the Temple are "pure". In his commentary on the mishna Eduyot 8:4, the Bartenura describes a disagreement as to ...
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Is coral a kind of wood?

The mishna Keilim 13:6 discusses the susceptibility to tumah of objects partially of wood and partially of metal. ‮עֵץ הַמְשַׁמֵּשׁ אֶת הַמַּתֶּכֶת, טָמֵא. וְהַמַּתֶּכֶת הַמְשַׁמֵּשׁ אֶת הָעֵץ, ...
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Why do unfinished wooden utensils have a different law than unfinished metal utensils?

In Keilim 12:8, we see that unfinished wooden utensils with a receptacle are susceptible to tumah, except those woods whose properties make the utensil unusable. ‮... כל גולמי כלי עץ טמאין, חוץ משל ...
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Why does an upside-down sealed pot save everything below it from tumah?

Mishna Keilim 10:1 discusses tsamid patil (צמיד פתיל), a tight covering for clay pots that protect their contents from external sources of tumah. It includes this statement: ‮היו כפויין על פיהן, ...
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Why record retracted opinions in the mishnah?

The mishna Keilim 9:2 records a disagreement between Beit Hillel and Beit Shammai, and then records that Beit Hillel retracted their opinion and agreed with Beit Shammai. ‮חבית שהיא מלאה משקין ...
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Why use/repeat this phrase in the mishna?

In eight mishnayyot (Keilim 8:4, Parah 8:2–7, Tahorot 8:7), we find the following odd phrase. הרי זה אומר מטמאיך לא טימאוני ואתה טימאתני It says: that which made you tamei didn't make me tamei,...
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Why is the halacha according to R. Meir against R. Shimon?

The mishna Keilim 7:4-5 (just :5 in other versions) brings a series of cases in which an item is connected by Rabbinic law (and not by Torah law; see Rambam's commentary) to another item, and in each ...
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Does clay used as a foundation count as clay or as the ground?

The mishnah in Keilim 6:1 describes a stove made in two ways: a pot resting on three metal* pegs that are either (1) attached at the ground via clay, or (2) stuck into the ground. In the first case, ...
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Two supports for a stove: which one “counts”?

The mishnah in Keilim 6:1 describes a stove made in two ways: a pot resting on three metal* pegs that are either (1) attached at the ground via clay, or (2) stuck into the ground. In the first case, ...
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43 views

How does tumah work in the sale of an oven between a householder and a baker?

The mishnah at Keilim 5:5 describes the susceptibility to tumah of an attachment to a pottery oven (translation from Sefaria): ‮מוסף התנור: של בעלי בתים טהור; ושל נחתומין טמא, מפני שהוא סומך עליו ...
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Can air-dried earthenware become tamei?

According to mishna Keilim 4:4, earthenware is not susceptible to tumah until it has been baked in an oven. ‮כלי חרס מאימתיי מקבלין טומאה? משייצרפו בכבשן, והיא גמר מלאכתן. When does ...
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What does שם כלי mean?

The mishna in Keilim 3 discusses when an earthenware pot loses/regains its ability to contract tumah. Part of the discussion hinges on whether the pot has lost its status as a utensil (שם כלי). ...
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Non-Jews vs Zavim with respect to entering the Temple

In Niddah 34a, the gemara says that the sages decreed tumah on non-Jews like that of a zav (translation edited from Soncino): ‮(ויקרא טו) דבר אל בני ישראל ואמרת אליהם איש איש כי יהיה זב בני ישראל ...
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Which manuscript of the Mishna did the Bartenura check?

In Kelim 28:5, the Mishna comments upon the susceptibility to impurity of various objects whose primary usage has been changed. A canteen that is turned into a mat, or a mat that has been turned into ...
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a non halachic pirush on maseches kelim

I recall once having seen a pirush on maseches kelim from a kabalah - chasidus viewpoint, and i since cant recall the name of the sefer or who wrote it, any ideas?