David said to Achish, If now I have found favor in your eyes, let them give me a place in one of the cities in the country, that I may dwell there: for why should your servant dwell in the royal city with you?
We are not given much information about the conditions upon which Achish settled David in Ziklag, but part of David's obligation, as proved by subsequent developments, included his report back to Achish in Gath after each military expedition, including, no doubt, a sharing of the spoil from such endeavors with Achish, David's overlord.