Numbers 31:19

And you⌃ shall encamp outside the [great] camp seven days; every one who has slain and who touches a dead body, shall be purified on the third day, and you⌃ and your captivity [shall purify yourselves] on the seventh day.

And do ye abide without the camp seven days: whosoever hath killed any person, and whosoever hath touched any slain, purify both yourselves and your captives on the third day, and on the seventh day.

“Encamp outside of the camp for seven days. Whoever has killed any person, and whoever has touched any slain, purify yourselves on the third day and on the seventh day, you and your captives.