The pitiless King gave a beggar a bag with a poisonous snake in it; his own son, putting stones into the beggar's saddlebag, was bitten and died: the King could take no revenge, because the guilt was double — the poisoned bag and the way he had raised his son.
In a certain region a King with a bad heart ruled, and the son was no better.
A beggar came once to the palace to ask for alms, and the King put into his hands a bag in which he had put a poisonous snake. The beggar went away very happy, without looking to see what he was carrying. Already on the road he ran into the King's son, who was out with other boys and wanted to talk them into throwing stones into the beggar's bags; none of them agreed. He alone grabbed a handful of stones and put them into the bag his father had given the beggar. Bad luck had it that the snake bit him, and shortly after he died.
The King had no way to take revenge, because the blame was doubly his: he had handed over the poisoned bag and he had raised the son badly. The beggar, when he learned of the prince's death, took back to him that same bag he had been given, thinking that this would save him.
Note: be careful where you put your hands. The father kills the son.