וְהֶאֶזְנִ֣יחוּ נְהָר֔וֹת דָּלֲל֥וּ וְחָרְב֖וּ יְאֹרֵ֣י מָצ֑וֹר קָנֶ֥ה וָס֖וּף קָמֵֽלוּ׃
And the rivers shall become foul; The streams of Egypt shall be minished and dried up; The reeds and flags shall wither.
Read halakhic rulings (Jewish law) on Isaiah 19:6: and classical halakhic sources.