II Kings 4:39-40

So one went out into the field to gather herbs, and found a wild vine, and gathered from it a lapful of wild gourds, and came and sliced them into the pot of stew, though they did not know what they were. Then they served it to the men to eat. Now it happened, as they were eating the stew, that they cried out and said, “Man of God, there is death in the pot!” And they could not eat it.