"The Water of Life" (German: Das Wasser des Lebens) is a German fairy tale collected by the Brothers Grimm, tale number 97.
It is Aarne-Thompson type 551.
John Francis Campbell noted it as a parallel of the Scottish fairy tale, The Brown Bear of the Green Glen.
A king was dying. An old man told his sons that the water of life would save him. Each one set out in turn. The two older ones, setting out in hopes of being the heir, were rude to a dwarf on the way and became trapped in ravines. When the youngest son went the dwarf asked where he was going, and he told him. The dwarf told him it was in a castle, and gave him an iron wand to open the gates and two loaves to feed to the lions inside. Then he had to get the water before the clock struck 12 when the gates would shut again.
He opened the gate with the wand and fed the lions the bread. Then he came to a hall where there were sleeping princes, and he took rings from their fingers and some bread and sword from the table. He went on and found a beautiful princess, who kissed him, told him he had freed her, and promised to marry him if he returned within a year. Then she told him where the spring was. He went on, but saw a bed and lay down to sleep. When he woke, it was a quarter to twelve. He sprang up, got the water, and escaped, with the closing gate taking off the heel of his boot.
He met the dwarf who told him what happened to his brothers and at his imploring freed them,warning that they had evil hearts. They came to a kingdom plagued by war and famine, the prince killed their foes with the sword and fed them with the loaf. Then they came to two more kingdoms in the same situation, and they did the same. Then they got on a ship to cross the sea and come home. The older brothers stole the water of life and filled his bottle with sea water.
The king was sickened by the sea water. The older brothers accused the youngest of trying to poison him and gave him the water of life. The king decided to have his youngest son secretly killed (for punishment). He sent a huntsman with him into the woods, but the huntsman was unable to bring himself to kill him and confessed the deed to the prince. The prince and the huntsman swapped clothes and the prince fled.