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Mendy Wineberg

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Originally from South Africa, Rabbi Mendy Wineberg is an administrator and teacher at Yeshivas Hashluchim, a Manhattan-based program dedicated to educating candidates for rabbinical ordination. He specializes in Jewish law and has been writing for Chabad.org for several years. Rabbi Wineberg lives with his family in Brooklyn, N.Y.
Smoothing a rough or uneven surface constitutes the melachah of memachek and is forbidden on Shabbat. In the Mishkan, this melachah involved scraping the hides of the rams and the tachash to smooth them and remove any excess hair. Shabbat 73a and Rashi th...
The tanning process involved soaking the hides in a salty mixture and can be applied to food as well.
One may not remove the skin of raw chicken or fish on Shabbat, as this would violate mafshit.
Slaughtering an animal to benefit from its hide or meat is the av melachah of shochait. It encompasses any means of ending life (not just kosher slaughter) of any living creature, including insects, birds or fish. Shulchan Aruch Harav, 316:13. Shochait in...
Trapping animals is forbidden on Shabbat.
Tearing is forbidden on Shabbat, as it is actually part of the sewing process.
Sewing is forbidden on Shabbat. This includes attaching two different items using any medium which firmly holds them together, like gluing, stapling, or pinning.
The act of untying a knot.
The act of binding by tying a knot.
After wool has been dyed it is ready to be spun and woven into fabric. Here is how it is done.
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