1 Samuel 14:32-33

32they rushed to the plunder, took sheep, goats, cattle, and calves, slaughtered them on the ground, and ate meat with the blood still in it.

33Some reported to Saul, “Look, the troops are sinning against the Lord by eating meat with the blood still in it.” Saul said, “You have been unfaithful. Roll a large stone over here at once.”