Numbers 31:28

²⁶Take the sum of the prey that was taken, both of man and of beast, thou, and Eleazar the priest, and the chief fathers of the congregation:

²⁷And divide the prey into two parts; between them that took the war upon them, who went out to battle, and between all the congregation:

— Numbers 31:28 —

²⁹Take it of their half, and give it unto Eleazar the priest, for an heave offering of the LORD.

³⁰And of the children of Israel’s half, thou shalt take one portion of fifty, of the persons, of the beeves, of the asses, and of the flocks, of all manner of beasts, and give them unto the Levites, which keep the charge of the tabernacle of the LORD.