Deuteronomy 21:1 KJV
If one be found slain in the land which the Lord thy God giveth thee to possess it, lying in the field, and it be not known who hath slain him:
Deuteronomy 21:1, King James Version
In context
1 If one be found slain in the land which the Lord thy God giveth thee to possess it, lying in the field, and it be not known who hath slain him:
2 Then thy elders and thy judges shall come forth, and they shall measure unto the cities which are round about him that is slain: