making a double knot; making a knot at the end of a string, bag, etc.
הכנה ליום אחר (Preparations for a Weekday): The Basic Halachas of Washing Dishes and Glasses;
This Melacha Applies to Sifting Wanted or Unwanted Particles. Does the Concept of מיד (Miyad/Immediate Use) Apply to This Melacha?;