Deuteronomy 25:2

25:2 Then, if the guilty person is sentenced to a beating, the judge shall force him to lie down and be beaten in his presence with the number of blows his wicked behavior deserves.

Deuteronomy 25:1

25:1 If controversy arises between people, they should go to court for judgment. When the judges hear the case, they shall exonerate the innocent but condemn the guilty.