Elves and the Shoemaker

A shoemaker and his wife were very poor. One day they ran out of leather so they went to bed. In the morning, they found a pair of shoes and a passerby bought them. The next night, another pair of shoes appeared. The third night they hid and saw two elves making shoes. In gratitude, they made clothes for the elves, as winter was approaching. The elves were very happy and went on to help someone else.