If the brother of a married man who died childless fails to have sex with his dead brother's wife, what must the wife do?

Take off her brother-in-law's shoe and spit in his face

Fewer Words Version: If a married man dies without having children, his brother must have sex with his dead brother's wife.

f the dead man's brother doesn't want to have sex with her, then she will say to the elders, "My husband's brother refuses to have sex with me."

Then she will take off his shoe, spit in his face, and say, "This is what happens to a man who refuses to have sex with his dead brother's wife." Deuteronomy 25:7-9