5 quando habitaverint fratres simul et unus ex eis absque liberis mortuus fuerit uxor defuncti non nubet alteri sed accipiet eam frater eius et suscitabit semen fratris sui
5
If brothers are living together and one of them dies without a son, his widow must not marry outside the family. Her husband’s brother shall take her and marry her and fulfill the duty of a brother-in-law to her.