1 Samuel 18:25-27

25Saul replied, “Tell David, ‘The king doesn’t want any payment for the bride except 100 Philistine foreskins so that he can get revenge on his enemies.’ ” In this way Saul planned to have David fall into the hands of the Philistines.

26When his officers told David this, David concluded that it was acceptable to become the king’s son-in-law. Before the time was up,

27David and his men went out and struck down 200 Philistines. David brought the foreskins, and they counted them out for the king so that David could become the king’s son-in-law. Then Saul gave him his daughter Michal as his wife.