She made a great feast and invited a wise Shaman, a wise old woman, a great brave, a great hunter, and four maidens as the chief guests, and all the people as common guests. She placed the people as they belonged according to the bands with her son among the chief guests. When all were satisfied with eating she stood before the people and told the story of the Four Brothers; of her coming to them, of their going, of her vision, and of the birth and life of her son. She then told them to examine her son that they might know that he was mysterious (Wakan). The people all examined the young man and when they found that his flesh was hard like stone they said he was indeed mysterious and that he was the Stone Boy.

The Sun Dance and Other Ceremonies of the Oglala Division of the Teton Dakota, p. 195