אָ֚ז אַשְׁקִ֣יעַ מֵֽימֵיהֶ֔ם וְנַהֲרוֹתָ֖ם כַּשֶּׁ֣מֶן אוֹלִ֑יךְ נְאֻ֖ם אֲדֹנָ֥י יְהוִֽה׃
Então tornarei claras as suas águas, e farei correr os seus rios como o azeite, diz o SENHOR Deus.
Rashi on Ezekiel
I shall sink their waters The foot of cattle will not make it murky, and the mud will sink, so that the water will be clear and clean like refined oil.