Una pila de paja [que abarca toda la anchura] entre dos patios, diez tefachim de altura —se hacen dos eruvin y no uno. Estos comen de aquí y los de allá. [es decir, permiten que sus bestias coman de la paja y no tengan miedo de que la pila descienda a menos de diez tefachim y se convierta en un dominio, que se prohiben entre sí, y continúan transportando en el patio sin darse cuenta eso. Esto no es de temer, ya que incluso si desciende, si la reducción no se extiende más allá de diez codos, no se prohíben mutuamente. Para diez codos es una entrada (ver 7: 2), y una bestia no consume tanto en un Shabat.] Si la paja (pila) descendió por debajo de diez tefachim [a lo largo de todo el patio, o más allá de diez codos] , se hace un eruv y no dos [(si descendió así durante la semana, antes del Shabat)].
Bartenura on Mishnah Eruvin
מתבן – a heap of straw, and it interrupts on the surface of the entire width of the courtyards.
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English Explanation of Mishnah Eruvin
Introduction
This mishnah discusses a heap of straw that divides two courtyards.
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Bartenura on Mishnah Eruvin
אלו מאכילין – they place their cattle to eat from the straw, and we don’t suspect that perhaps the straw will be come less than ten [handbreadths] and that it would be one domain and they would be mutually prohibited [from eating] and would carry in the courtyard and not be aware of it, for this we do not suspect for even whether it would decrease or not, the minority is over the surface of ten cubits and more does not prohibit it, for ten cubits are an opening, and the cattle do not lessen it all that much in its eating [on one Sabbath].
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English Explanation of Mishnah Eruvin
If a heap of straw between two courtyards yards was ten handbreadths high, they make two eruvin but not one. Although we learned above in mishnah three that straw that was used to fill a ditch is not significant and that the ditch remains a partition between the two courtyards, here we learn that a heap of straw itself can serve as such a partition. This is because people sometimes do use heaps of straw in order to divide areas.
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Bartenura on Mishnah Eruvin
נתמעט התבן מי' טפחים – over the surface of the entire length of the courtyard or amidst the ten cubits [and more].
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English Explanation of Mishnah Eruvin
These may feed [their cattle] from this side and these may feed from the other side. Just as it was permitted to eat the produce on top of the wall, so too cattle-owners on each side can allow their cattle to graze from either side of the straw heap.
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Bartenura on Mishnah Eruvin
מערבין אחד – if it decreased on the weekday before [the onset of] Shabbat.
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English Explanation of Mishnah Eruvin
If the height of the straw heap was reduced to less than ten handbreadths, one eruv may be prepared but not two. If the heap of straw became less than ten handbreadths high, it ceases to serve as a partition, and then both courtyards must share an eruv.