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* Rabbenu Yerucham (cited by Beit Yosef 405:6) holds that in order for the city to count like 4 amot it must have walls made for living only when brought from beyond the techum. However, when acquiring techum at the beginning of Shabbat walls aren't necessary. Biur Halacha (405:8 s.v. im) rules in according with this view. Dirshu 405:17 also infers this from Shaar Hatziyun 408:13. | * Rabbenu Yerucham (cited by Beit Yosef 405:6) holds that in order for the city to count like 4 amot it must have walls made for living only when brought from beyond the techum. However, when acquiring techum at the beginning of Shabbat walls aren't necessary. Biur Halacha (405:8 s.v. im) rules in according with this view. Dirshu 405:17 also infers this from Shaar Hatziyun 408:13. | ||
*Ramban (Eruvin 41a) holds that walls are never necessary for a city to be considered 4 amot. Biur Halacha (405:6 s.v. mukfet) writes that in an extenuating circumstance you can rely on this opinion, unlike Shulchan Aruch O.C. 405:6 who rules unlike Ramban.</ref> | *Ramban (Eruvin 41a) holds that walls are never necessary for a city to be considered 4 amot. Biur Halacha (405:6 s.v. mukfet) writes that in an extenuating circumstance you can rely on this opinion, unlike Shulchan Aruch O.C. 405:6 who rules unlike Ramban.</ref> | ||
==Who Needs An Eruv Techumin?== | |||
# A child up to the age of 7 follows his mother's techum.<ref>Ketubot 65b, Shulchan Aruch O.C. 414:2</ref> | |||
==Links== | ==Links== | ||
# See a summary of the halacha's of techum with pictures on [http://www.techumshabbos.com/the-basic-halachos-in-a-rush.html techumShabbos.com] | # See a summary of the halacha's of techum with pictures on [http://www.techumshabbos.com/the-basic-halachos-in-a-rush.html techumShabbos.com] |