TSK · Deuteronomy 27:22

"'If a man takes his sister, his father's daughter, or his mother's daughter, and sees her nakedness, and she sees his nakedness; it is a shameful thing; and they shall be cut off in the sight of the children of their people: he has uncovered his sister's nakedness; he shall bear his iniquity.

So Tamar went to her brother Amnon's house; and he was laid down. She took dough, and kneaded it, and made cakes in his sight, and baked the cakes.