1 Samuel 14:32-34

[When night came and the oath ended] the people rushed greedily upon the spoil. They took sheep, oxen, and calves, and slaughtered them on the ground; and they ate them [raw] with the blood [still in them]. Then Saul was told, “Look, the people are sinning against the LORD by eating [the meat] with the blood.” And he said, “You have violated [the Law] and acted treacherously; roll a large stone to me today.” [Lev 7:26, 27] Saul said, “Spread out among the people and tell them, ‘Each one of you bring me his ox or his sheep, and butcher it [properly] here and eat; and do not sin against the LORD by eating [the meat with] the blood.’ ” So that night each one brought his ox with him and butchered it there.