Little Brother and Sister
"And when they came to the third brook the sister heard how it said as it ran,
"Who drinks of me will be a deer; who drinks of me will be a deer" The sister said, "Oh, I pray you, dear brother, do not drink, or you will become a roebuck, and run away from me." But the brother had knelt down at once by the brook, and had bent down and drunk some of the water, and as soon as the first drops touched his lips he lay there a young deer."
- Brother Grimm, 'Little Brother and Sister.'