Meleches Shabbos – Kosheir 3 – A Kesher According to All Opinions (Klal 26-27 Siman 1) S0619
We are beginning siman 1. The Chayei Adam writes that if a person ties or unties a knot which meets both criteria–that is, it is a kesher shel kayama (a lasting knot, an issue of intent), and it is a maaseh uman (craftsman-grade knot, an issue of physical function)–they are chayav mideoraysa. The Chayei […]
