Deuteronomy 25:8-10

8Then the elders of his city shall call him and speak to him. But if he stands firm and says, ‘I do not want to take her,’

9then his brother’s wife shall come to him in the presence of the elders, remove his sandal from his foot, spit in his face, and answer and say, ‘So shall it be done to the man who will not build up his brother’s house.’

10And his name shall be called in Israel, ‘The house of him who had his sandal removed.’