PJ Num20:2 :ולפום דבזכותא דמרים איתיהיבת בירא כד שכיבת איתגניזת בירא ולא הוו מוי לכנישתא‏ : since the well had been given due to Miriam’s merit, when she passed away the well became hidden and there was no water for the congregation
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