1 Chronicles 11:17-19

David had a craving and said, “Oh that someone would give me water to drink from the well of Bethlehem, which is by the gate!” So the three broke through the camp of the Philistines and drew water from the well of Bethlehem which was by the gate, and took it and brought it to David; nevertheless David would not drink it, but poured it out to the LORD; and he said, “Be it far from me before my God that I should do this. Shall I drink the blood of these men who went at the risk of their lives? For at the risk of their lives they brought it.” Therefore he would not drink it. These things the three mighty men did.