Miriam's Well

Rabbi Yosei, son of Rabbi Yehuda, says: Three good sustainers rose up for the Jewish people and these are they: Moses, Aaron and Miriam. And three good gifts were given to their hands, and these are they: The well of water, the pillar of cloud, and the manna. The well in the merit of Miriam; the pillar of cloud in the merit of Aaron; and the manna in the merit of Moses. When Miriam died the well disappeared, as it is stated: “And Miriam died there” (Numbers 20:1), and it says thereafter in the next verse: “And there was no water for the congregation” (Numbers 20:2). But the well returned in the merit of both Moses and Aaron.

... And there are those who say to draw water from wells or natural springs every Saturday night, because the well of Miriam passes through all the wells and natural springs every Saturday night. And one who touches it and drinks from it will be healed from all his afflictions.