Re-inserting straps on a shoe on Shabbos vs. inserting a new strap. Untying a non-professional knot on Shabbos. May one untangle tzitzit strings on Shabbos?
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...