Numbers 31:20

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

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.

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;

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