1 Samuel 5:4-5

4But when they got up early the next morning, behold, 1Dagon had fallen on his face to the ground before the ark of the Lord. And the head of Dagon and both palms of his hands were cut off on the threshold; 2only the torso of Dagon was left. 5For that reason neither the priests of Dagon nor any who enter Dagon’s house 3step on the threshold of Dagon in Ashdod to this day.