2 Kings 2:20

וַיָּשֻׁבוּ אֵלָיו וְהוּא יֹשֵׁב בִּירִיחוֹ וַיֹּאמֶר אֲלֵהֶם הֲלֽוֹא־אָמַרְתִּי אֲלֵיכֶם אַל־תֵּלֵֽכוּ

And they came back to him, while he tarried at Jericho; and he said unto them: ‘Did I not say unto you: Go not?’

וַיֹּאמְרוּ אַנְשֵׁי הָעִיר אֶל־אֱלִישָׁע הִנֵּה־נָא מוֹשַׁב הָעִיר טוֹב כַּאֲשֶׁר אֲדֹנִי רֹאֶה וְהַמַּיִם רָעִים וְהָאָרֶץ מְשַׁכָּֽלֶת

And the men of the city said unto Elisha: ‘Behold, we pray thee, the situation of this city is pleasant, as my lord seeth; but the water is bad, and the land miscarrieth.

וַיֵּצֵא אֶל־מוֹצָא הַמַּיִם וַיַּשְׁלֶךְ־שָׁם מֶלַח וַיֹּאמֶר כֹּֽה־אָמַר יְהוָה רִפִּאתִי לַמַּיִם הָאֵלֶּה לֹֽא־יִהְיֶה מִשָּׁם עוֹד מָוֶת וּמְשַׁכָּֽלֶת

And he went forth unto the spring of the waters, and cast salt therein, and said: ‘Thus saith the LORD: I have healed these waters; there shall not be from thence any more death or miscarrying.’

וַיֵּרָפוּ הַמַּיִם עַד הַיּוֹם הַזֶּה כִּדְבַר אֱלִישָׁע אֲשֶׁר דִּבֵּֽר

So the waters were healed unto this day, according to the word of Elisha which he spoke.