Numbers 31:26 WEB

²⁴  You shall wash your clothes on the seventh day, and you shall be clean; and afterward you shall come into the camp.

²⁵  Yahweh spoke to Moses, saying,

²⁶  Take the sum of the prey that was taken, both of man and of animal, you, and Eleazar the priest, and the heads of the fathers' [houses] of the congregation;

²⁷  and divide the prey into two parts: between the men skilled in war, who went out to battle, and all the congregation.

²⁸  Levy a tribute to Yahweh of the men of war who went out to battle: one soul of five hundred, [both] of the persons, and of the oxen, and of the donkeys, and of the flocks: