1 Samuel 14:31-33

That day, after the Israelites had struck down the Philistines from Mikmash to Aijalon, they were exhausted. They pounced on the plunder and, taking sheep, cattle and calves, they butchered them on the ground and ate them, together with the blood. Then someone said to Saul, “Look, the men are sinning against the LORD by eating meat that has blood in it.” “You have broken faith,” he said. “Roll a large stone over here at once.”