Numbers 31:23

20 and every garment, and every skin vessel, and every work of goats` [hair], and every wooden vessel, ye yourselves cleanse.`

21 And Eleazar the priest saith unto the men of the host who go in to battle, `This [is] the statute of the law which Jehovah hath commanded Moses:

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

23 every thing which may go into fire, ye cause to pass over through fire, and it hath been clean; only, with the water of separation it is cleansed, and all that may not go into fire, ye cause to pass over through water;

24 and ye have washed your garments on the seventh day, and have been clean, and afterwards ye come in unto the camp.`

25 And Jehovah speaketh unto Moses, saying,

26 `Take up the sum of the prey of the captives, among man and among beast, thou, and Eleazar the priest, and the heads of the fathers of the company;