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MB3 28b: Insulating a Kli Sheni (257:3-7)
Re-covering something on shabbos with something that increases heat (דבר המוסיף הבל); increasing or changing the insulation on Shabbos; insulating a cold item on Shabbos.
Rabbi Aaron E. Glatt, MD
Rabbi Aaron E. Glatt, MD, MACP, FIDSA, FSHEA is the Associate Rabbi at the Young Israel of Woodmere. He has been giving a Daf Yomi shiur for 30 years (available on YUTorah), and also gives a weekly gemara be’iyun shiur, daily halacha shiurim, and many other classes. An international lecturer on medical and halachic issues, Rabbi Dr. Glatt has autho...
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