Un individuo que se vuelve impuro a través del contacto con un cadáver, que exprime aceitunas u uvas, si [las frutas que exprimió] son equivalentes a exactamente un huevo [en volumen], [el líquido que sale de ellas] es puro, siempre que él no toca la parte del líquido [fruta que ya estaba exprimida]. [Si son] más que el equivalente de un huevo [en volumen], es impuro, ya que una vez que emergió la primera gota se volvió impuro por el volumen de un huevo [de fruta, que es una cantidad suficiente para producir impureza; pero cuando solo hay exactamente el volumen de fruta de un huevo, la primera gota que emerge no se vuelve impura, ya que ya no queda una cantidad suficiente de alimento para hacerlo impuro]. Si el individuo era un zav o zava [un hombre o una mujer, respectivamente, con una descarga genital que los convierte en un origen de impureza], incluso con [el exprimido de] una baya, [el líquido de la fruta] es impuro, desde que surgió la primera gota, se volvió impuro a través del transporte [ya que un zav / zava también hace impuro todo lo que él o ella lleva o mueve]. Un zav que ordeñaba una cabra, la leche es impura, porque cuando surgió la primera gota, se volvió impura al transportarla.
Bartenura on Mishnah Tahorot
ובלבד שלא יגע במשקין – as for example, that he pressed them with flat wooden implements that do not become defiled , for now there is nothing here that would defile the liquids other than the husk/pomace of grapes that someone defiled by a corpse had touched , for he was not careful regarding their contact other than when liquid exudes, and when the liquids come in contact with the husks/pomace of grapes there is already missing the measurement of an egg’s bulk. But food does not defile with less than an egg’s bulk.
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English Explanation of Mishnah Tahorot
Introduction
Today's mishnah continues to deal with cases where one drop comes out of something, becomes impure through contact with the food from which it came and then conveys uncleanness back to the food.
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Bartenura on Mishnah Tahorot
יותר מכביצה טמא - that since the first drop had exuded, it became defiled with the equivalent of an egg’s bulk, for even though the liquid that is absorbed in the food is not susceptible to receive ritual defilement with it, it completes its measurement. For like it, we find adjacent (in the next Mishnah) regarding an olive’s bulk from a corpse or from a carrion that had been reduced/shrank in the sun and he placed them in the rain and they swelled up, for the rains that are absorbed/swallowed up complete to make up the measurement.
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English Explanation of Mishnah Tahorot
A man who had corpse uncleanness who pressed olives or grapes: If its bulk was exactly that of an egg, the juice remains clean provided he does not touch the place on which the liquid is; But [if the bulk was] more than that of an egg, the juice becomes unclean, for as soon as the first drop came out, it became unclean by contact with an egg's bulk. The impure person is pressing olives or grapes, and we need to know whether he conveys his impurity to the grape juice or olive oil. If the amount of juice or oil is exactly the volume of an egg, then the juice or oil remains pure, for the same reason we learned in the first two mishnayot of our chapter. Once the first drop is removed, there is less than an egg's worth of food and less than an egg's worth of food is not susceptible to impurity. However, the mishnah notes, if the person with corpse impurity touches the liquid then the liquid is impure and all subsequent drops will be impure as well. But if there is more than an egg's worth of liquid then all of the juice (or oil) will be unclean because the first drop is defiled by contact with the impure olives or grapes.
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English Explanation of Mishnah Tahorot
If the person was a zav or a zavah [the juice] becomes unclean even if only one berry [was pressed out], for as soon as the first drop came out it became unclean by carrying. The difference between a zav (person with abnormal genital discharge) and a person who has corpse impurity is that a zav or zavah defiles through carrying, even if they don't touch that which they are carrying. So in this case, it doesn't matter how many berries (of grapes or olives, both are called "berries") the juice will be impure by virtue of its being carried by a zav or zavah.
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English Explanation of Mishnah Tahorot
If a zav milked a goat, the milk becomes unclean, for as soon as the first drop comes out it becomes unclean by carrying. Similarly, if a zav milks a goat (notice, goat and not cow) the milk will immediately be defiled even if the zav doesn't touch it because a zav conveys impurity by carrying.
