וַתֹּ֗אמֶר הִנֵּה֙ שָׁ֣בָה יְבִמְתֵּ֔ךְ אֶל־עַמָּ֖הּ וְאֶל־אֱלֹהֶ֑יהָ שׁ֖וּבִי אַחֲרֵ֥י יְבִמְתֵּֽךְ׃
And she said: ‘Behold, thy sister-in-law is gone back unto her people, and unto her god; return thou after thy sister-in-law.’
Read halakhic rulings (Jewish law) on Ruth 1:15: and classical halakhic sources.