Then the Stone Boy said, "I will have no pity on you. Tell me where my mother's brothers are." Iya said, "I do not know."

Then the Stone Boy seized him by the foot and placed it on the ground and trod on it and Iya's foot was flattened like a piece of dried skin and he howled with pain. But the Stone Boy demanded of him to tell where his mother's brothers were, and Iya declared that he did not know. Then the Stone Boy flattened his other foot in the same way, and Iya sobbed and cried with pain and said he would tell an to the Stone Boy if he would not punish him any farther, for Iya recognized that the Stone Boy was truly his master.

The Sun Dance and Other Ceremonies of the Oglala Division of the Teton Dakota, p. 200