1 Samuel 30:24-26

24For who will hearken unto you in this matter? but as his part is that goeth down to the battle, so shall his part be that tarrieth by the stuff: they shall part alike. 25And it was so from that day forward, that he made it a statute and an ordinance for Israel unto this day.1

26And when David came to Ziklag, he sent of the spoil unto the elders of Judah, even to his friends, saying, Behold a present for you of the spoil of the enemies of Yhwh;2