Numbers 31:25-29

25Adonai said to Moses saying,

26“Count the total spoil from the captive people and animals—you, Eleazar the kohen and the princes of the fathers of the community.

27You are to divide the spoil between those fighting in the war, taking part in the battle, and the rest of the community.

28You are also to set apart from the men of war going into battle tribute to Adonai, one item from every 500, whether persons, cattle, donkeys or flock.

29From their half share, take and give it to Eleazar the kohen as Adonai’s part.