וְאַתָּ֗ה תְּבַעֵ֛ר הַדָּ֥ם הַנָּקִ֖י מִקִּרְבֶּ֑ךָ כִּֽי־תַעֲשֶׂ֥ה הַיָּשָׁ֖ר בְּעֵינֵ֥י יְהוָֽה׃ (ס)
So shalt thou put away the innocent blood from the midst of thee, when thou shalt do that which is right in the eyes of the LORD.
Read halakhic rulings (Jewish law) on Deuteronomy 21:9 from the Mishneh Torah and classical halakhic sources, free online.