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Throwing an object from public domain to public domain through a private domain. The stringent prohibition on passing an object from private domain to private domain across the pblic domain, despite the fact that one who thows the object in that situation would be exempt. We learn this from the Levites in the wilderness who would pass the beams of the Tabernacle from one wagon to another for transportation on double wagons. The women who created the lower curtains (wool and linen, beautiful colors) and upper curtains (goats hair, more common-looking) of the Tabrnacle possessed two kinds of wisdom, and the higher wisdom produced the less flashy curtains.