1 Samuel 30:24-26

24Who will listen to you in this matter? The portion of the one who went down into the battle will be the same as the portion of the one who remained with the equipment! Let their portions be the same!”

25From that time onward it was a binding ordinance for Israel, right up to the present time.

26When David came to Ziklag, he sent some of the plunder to the elders of Judah who were his friends, saying, “Here’s a gift for you from the looting of the Lord’s enemies!”