II Samuel 3:14

14 Then David sent messengers to Ish-Bosheth son of Saul, demanding, "Give me my wife Michal, whom I betrothed to myself for the price of a hundred Philistine foreskins."

14 And David sent men to Saul's son Ish-bosheth, saying, Give me back Michal, my wife, whom I made mine for the price of the private parts of a hundred Philistines.