Deuteronomy 21:1

And if one be found slain with the sword in the land, which the Lord thy God gives thee to inherit, having fallen in the field, and they do not know who has smitten [him];

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:

If someone is found slain in the land which Yahweh your God gives you to possess, lying in the field, and it isn’t known who has struck him,