If two men get into a hand-to-hand fight, and the wife of one of them gets involved to help her husband against his attacker, and she reaches out her hand and grabs his genitals,
then his sister-in-law must approach him in view of the elders, remove his sandal from his foot, and spit in his face. She will then respond, “Thus may it be done to any man who does not maintain his brother’s family line!”