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February 8, 2011 6:55 pm at 6:55 pm
#740149
☕ DaasYochid ☕
Participant
If I’m not mistaken, the 600k requirement for RHR is the daas yachid of Rashi, and most eruvin rely on this.
It’s actually far from a daas yochid; many rishonim hold this way. According to the Mishna B’rurah’s calculation, there is a slight majority who hold that 600k is necessary for a r’shus harabbim. Others have a different calculation based on rishonim that the M.B. didn’t see.