Deuteronomy 25:8-10

8The elders of the town will then summon him and talk with him. If he still refuses and says, ‘I don’t want to marry her,’

9the widow must walk over to him in the presence of the elders, pull his sandal from his foot, and spit in his face. Then she must declare, ‘This is what happens to a man who refuses to provide his brother with children.’

10Ever afterward in Israel his family will be referred to as ‘the family of the man whose sandal was pulled off’!