How long does a knot have to be tied to be considered a "קשר של קימא". (Knot of permanence).
מבטל כלי מהיכנו (nullifying a vessel from its normal usage). Putting a כלי (utensil/vessel) under candles to catch oil, to catch the candle and...
Is There a Difference Between Walking on Short Grass as Opposed to Walking on Tall Grass?;