REVACH L'DAF
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12TH CYCLE DEDICATIONS:
ERUVIN 92-95 (5-8 Teves) - Dedicated in memory of Max (Meir Menachem ben Shlomo ha'Levi) Turkel, by his children Eddie and Lawrence and his wife Jean Turkel/Rafalowicz. Max was a warm and loving husband and father and is missed dearly by his family and friends. His Yahrzeit is 5 Teves. |
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SUMMARY
1. Rav Chisda: If there are five Tefachim of vertical ascent from a lower level to an upper level (e.g. the ground of one Chatzer is five Tefachim above the ground of the neighboring Chatzer) and there is a wall five Tefachim tall on top of the ascent, the wall and the ascent do not join to be considered a Mechitzah of ten Tefachim.
2. Rav: Rav Chisda agrees that this (#1) is considered a wall for the ground level.
3. The Gemara discusses what happens when a wall falls down between two Chatzeros, when each had its own Eruv.
4. The Gemara derives the law (in #3) from a case where the residents of two Chatzeros made an Eruv together, and the opening between them became closed on Shabbos.
5. Rav argues that if a wall falls down between two Chatzeros (see #3), the people in the Chatzeros may carry only four Amos at a time.
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A BIT MORE
1. The Gemara initially presumes that this means that it is not considered a Mechitzah at all, as all ten Tefachim must be either a vertical ascent, or a wall above ground, in order to constitute a proper Mechitzah, and it cannot be half-wall and half-ascent.
2. Since the people on the ground level see a ten-Tefach wall, it is indeed a wall for the ground level. Rav Chisda merely meant that it is not considered a wall for the Chatzer, since the people in the Chatzer see only a raised area of five Tefachim.
3. Since the wall fell down on Shabbos, it becomes a case of one Chatzer opening into another Chatzer. Therefore, we say that since each person was permitted to carry from his house to his Chatzer for part of Shabbos, he may continue to do so for the rest of this Shabbos.
4. For example, if a large rock fell down on Shabbos and filled up the entrance between the two Chatzeros, the Eruv is still valid since it was valid for part of Shabbos (see #3).
5. Rav does not agree that the Chatzeros that had an Eruv at the onset of Shabbos are permitted for the remainder of the Shabbos.
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