וַתֹּ֙אמֶר֙ אֶל־גְּבִרְתָּ֔הּ אַחֲלֵ֣י אֲדֹנִ֔י לִפְנֵ֥י הַנָּבִ֖יא אֲשֶׁ֣ר בְּשֹׁמְר֑וֹן אָ֛ז יֶאֱסֹ֥ף אֹת֖וֹ מִצָּרַעְתּֽוֹ׃
And she said unto her mistress: ‘Would that my lord were with the prophet that is in Samaria! then would he recover him of his leprosy.’
Read halakhic rulings (Jewish law) on II Kings 5:3: and classical halakhic sources.