Parallel
Numbers 31:19
Clementine Vulgate · Berean Standard Bible
et manete extra castra septem diebus. Qui occiderit hominem, vel occisum tetigerit, lustrabitur die tertio et septimo.
All of you who have killed a person or touched the dead are to remain outside the camp for seven days. On the third day and the seventh day you are to purify both yourselves and your captives.