Judges 4:20-21

20And he said to her, "Stand at the opening of the tent, and if any man comes and asks you, 'Is anyone here?' say, 'No.'"

21But Jael the wife of Heber took a tent peg, and took a hammer in her hand. Then she went softly to him and drove the peg into his temple until it went down into the ground while he was lying fast asleep from weariness. So he died.