and are included in an egg-sized portion or half a pras.דהָעוֹר הַמְּחֻבָּר בַּבָּשָׂר, וְהַמָּרָק וְהַתְּבָלִין וְהָאֲלַל, אַף עַל פִּי שֶׁמִּקְצָתוֹ חִשַּׁב עָלָיו וּמִקְצָתוֹ לֹא חִשַּׁב עָלָיו, מִקְצָתוֹ פְּלָטַתּוּ חַיָּה וּמִקְצָתוֹ פְּלָטַתּוּ סַכִּין, וְהָעֲצָמוֹת הַמְּחֻבָּרוֹת בַּבָּשָׂר, וְהַגִּידִים וְהַמְּקוֹמוֹת הָרַכִּים מִן הַקְּרָנַיִם וּמִן הַטְּלָפַיִם, וְהַכְּנָפַיִם וְהַנּוֹצָה, וְהַמְּקוֹמוֹת הָרַכִּים מִן הַצִּפָּרְנַיִם וּמִן הַחַרְטוֹם הַמֻּבְלָעִין בַּבָּשָׂר - כָּל אֶחָד מֵאֵלּוּ מִתְטַמְּאִין וּמְטַמְּאִין, וּמִצְטָרְפִין לְכַבֵּיצָה, אוֹ לְכַחֲצִי פְרָס.
and are included in an egg-sized portion or half a pras.דהָעוֹר הַמְּחֻבָּר בַּבָּשָׂר, וְהַמָּרָק וְהַתְּבָלִין וְהָאֲלַל, אַף עַל פִּי שֶׁמִּקְצָתוֹ חִשַּׁב עָלָיו וּמִקְצָתוֹ לֹא חִשַּׁב עָלָיו, מִקְצָתוֹ פְּלָטַתּוּ חַיָּה וּמִקְצָתוֹ פְּלָטַתּוּ סַכִּין, וְהָעֲצָמוֹת הַמְּחֻבָּרוֹת בַּבָּשָׂר, וְהַגִּידִים וְהַמְּקוֹמוֹת הָרַכִּים מִן הַקְּרָנַיִם וּמִן הַטְּלָפַיִם, וְהַכְּנָפַיִם וְהַנּוֹצָה, וְהַמְּקוֹמוֹת הָרַכִּים מִן הַצִּפָּרְנַיִם וּמִן הַחַרְטוֹם הַמֻּבְלָעִין בַּבָּשָׂר - כָּל אֶחָד מֵאֵלּוּ מִתְטַמְּאִין וּמְטַמְּאִין, וּמִצְטָרְפִין לְכַבֵּיצָה, אוֹ לְכַחֲצִי פְרָס.
There are Rishonim (Tosafot, and according to some, Rashi) who differ and maintain that food also does not contract impurity unless an egg-sized portion is present. The Rambam’s ruling is based on the Sifri to the prooftext cited.
See Hilchot Sha’ar Avot HaTum’ah 8:1, 3.
See ibid.:10-11 where the Rambam discusses this matter in greater detail.
Ibid.. A revi’it is 86 cc according to Shiurei Torah, 150 cc according to Chazon Ish.
I.e., they can be combined even if they are totally different entities.
I.e., a beast of prey ate part of the animal and left a part.
See Chapter 3, Halachah 3, for the explanation of this and the other terms mentioned in this halachah.
I.e., even though these substances would not necessarily be considered as food, they are placed in that category when one considers them as such. When they are added to other foods, they are also considered significant and can be counted as part of the minimum measures mentioned previously. See the Rambam's Commentary to the Mishnah (Chulin 9:1).
I.e., we consider the size of the food at the time the ruling is being made even though this leads to a more lenient ruling.
See Hilchot Sha’ar Avot HaTum’ah 4:13 for more details. There, the Rambam. writes that if a substance was less than the minimum measure, but was left in water so that it swelled and attained the size of the required minimum, it is forbidden only according to Rabbinic Law.
Sacrificial meat that was left beyond the time when it was permitted to be eaten.
A sacrifice that was disqualified because the priest had the intent that it be eaten at a time when it was forbidden to do so.
Premature death in this world and the soul being cut off in the world to come.
One is liable for punishment only if he partook of the minimum measure. Since the substances shrank in size, it is not considered as if he partook of that quantity.
An av tum’ah, a primary source of impurity.
The impurity associated with foods that involves a derivative of impurity.
Which would cause the person to be liable for karet.
Onion leaves that grow from onions that are not rooted in the ground [Commentary to the Mishnah (Uktzin 2:9)].
I.e., their volume is calculated without compressing them. Since the sap is flowing in them, their size is calculated according to their volume in their present state.
I.e., without sap.
See Rama (Orach Chayim 486:1) who quotes this principle in a different context.
In his Commentary to the Mishnah (op. cit.), the Rambam explains that the root of this Hebrew term is sifog, meaning “sponge,” i.e., a bread that is puffy like sponge.
Its volume is not compressed.
And thus its volume reduced.
In his Commentary to the Mishnah (op. cit.), the Rambam explains that it is common for the meat of a calf to absorb moisture and expand when cooked. Conversely, when the meat of an older animal is cooked, it contracts.
I.e., as it is after one cooked it, not according to its volume before it was cooked.
Even though when fresh, their volume was greater.
An olive-sized portion of the flesh of a human corpse imparts impurity (Hilchot Tum'at Meit 2:1), while a handful of the decomposed mass (rekev) does (ibid. 2:11).
An olive-sized portion of both imparts impurity, but the impurity associated with a human corpse is different and more than that associated with an animal carcass, for it imparts impurity that persists for seven days.
A lentil-sized portion of the flesh of the carcass of a crawling animal imparts impurity, while it is an olive-sized portion of an animal carcass which does so. Also, the type of impurity is different, as reflected in the fact that the flesh of an animal carcass when carried (without being touched) and the flesh of the carcass of a crawling animal does not impart impurity in that manner [the Rambam’s Commentary to the Mishnah (Me’ilah 4:4)].
A tertiary degree derivative of impurity imparts impurity to sacrificial foods.
A fourth degree derivative does not impart impurity to any substances. Since there is less than an egg-sized portion of the food that is a primary derivative, it does not impart impurity to the other food. The Rambam is emphasizing that we do not take the average of the two which would cause the mixture to receive a more severe degree of impurity.
For the primary derivative alone was of sufficient size to impart impurity.
For the primary derivative is reduced a level.
I.e., the loaf is considered as a tertiary derivative. Since the two mixtures did not fall at the same time, they are not combined and the situation is considered as that of a secondary derivative that touched other food.
In which instance, the food will be coming in contact with an egg-sized portion of a primary derivative.
We follow the same principles as in the previous halachah. Here, the secondary derivative alone was of sufficient size to impart impurity.
For, as above, the primary derivative alone was of sufficient size to impart impurity.
I.e., any food touched by a primary derivative becomes a secondary derivative. The fact that it had been classified as a tertiary derivative is of no consequence.
For there will be an egg-sized portion that is a primary derivative in each half.
Because it is probable that there is less than an egg-sized portion that is a primary derivative in each portion.
