Why does the Torah insert the (otherwise superfluous) word "ve?Isaron Echad"?
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Menachos, 87b: To teach us that there was only one Isaron measure in the Beis-Hamikdash (a heaped one), as opposed to the opinion of R. Meir, who maintains that there were two Isronos, a heaped one and a regular one.
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