Deuteronomy 21:2-4

English Standard Version

² then your elders and your judges shall come out, and they shall measure the distance to the surrounding cities. ³ And the elders of the city that is nearest to the slain man shall take a heifer ^(A)that has never been worked and that has not pulled in a yoke. ⁴ And the elders of that city shall bring the heifer down to a valley with running water, which is neither plowed nor sown, and shall break the heifer's neck there in the valley.