2 Samuel 3:14
And David sent messengers to Ishbosheth Saul's son, saying, Deliver me my wife Michal, whom I espoused to me for a hundred foreskins of the Philistines.
1 Samuel 18:27
when David arose and went, he and his men, and smote of the Philistines two hundred men; and David brought their foreskins, and they delivered them in full to the king, that he might be the king's son-in-law. And Saul gave him Michal his daughter as wife.
1 Samuel 18:25
And Saul said, Thus shall ye say to David: The king does not desire any dowry, but a hundred foreskins of the Philistines, to be avenged of the king's enemies. But Saul thought to make David fall by the hand of the Philistines.
2 Samuel 2:10
Ishbosheth Saul's son was forty years old when he began to reign over Israel, and he reigned two years. However, the house of Judah followed David.