רשי, במדבר כ:ב
“…had no water” From here [we learn that] all forty years they had the well in Miriam’s merit. [Ta’anith 9a] [translation by Judaica Press]
Suggested Discussion Questions:
Why do you think G-d removed the water source after Miriam's death?
Time Period: Medieval (Geonim through the 16th Century)