וַתֹּ֙אמֶר֙ כְּדִבְרֵיכֶ֣ם כֶּן־ה֔וּא וַֽתְּשַׁלְּחֵ֖ם וַיֵּלֵ֑כוּ וַתִּקְשֹׁ֛ר אֶת־תִּקְוַ֥ת הַשָּׁנִ֖י בַּחַלּֽוֹן׃
And she said: ‘According unto your words, so be it.’ And she sent them away, and they departed; and she bound the scarlet line in the window.
Read halakhic rulings (Jewish law) on Joshua 2:21: and classical halakhic sources.