Numbers 31:20

¹⁸  But all the women children, that have not known a man by lying with him, keep alive for yourselves.

¹⁹  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.

²⁰  And purify all your raiment, and all that is made of skins, and all work of goats' hair, and all things made of wood.

²¹  And Eleazar the priest said unto the men of war which went to the battle, This is the ordinance of the law which the LORD commanded Moses;

²²  Only the gold, and the silver, the brass, the iron, the tin, and the lead,