'Donkey Skin' from Andrew Lang's "Grey Fairy Book"
There was once upon a time a king who was so much beloved by his subjects that he thought himself the happiest monarch in the whole world, and he had everything his heart could desire. His palace was filled with the rarest of curiosities, and his gardens with the sweetest flowers, while in the marble stalls of his stables stood a row of milk-white Arabs, with big brown eyes. Strangers who had heard of the marvels which the king had collected, and made long journeys to see them, were, however, surprised to find the most splendid stall of all occupied by a donkey, with particularly large and drooping ears. It was a very fine donkey; but still, as far as they could tell, nothing so remarkable as to account for the care with which it was lodged; and they went away wondering, for they could not know that every night, when it was asleep, bushels of gold pieces tumbled out of its ears, which were picked up each morning by the attendants. After many years of prosperity a sudden blow fel...