Ruth 4:5

4:5 Then Boaz said, “When you acquire the field from Naomi, you must also acquire Ruth the Moabite, the wife of our deceased relative, in order to preserve his family name by raising up a descendant who will inherit his property.”

Ruth 4:9-10

4:9 Then Boaz said to the leaders and all the people, “You are witnesses today that I have acquired from Naomi all that belonged to Elimelech, Kilion, and Mahlon. 4:10 I have also acquired Ruth the Moabite, the wife of Mahlon, as my wife to raise up a descendant who will inherit his property so the name of the deceased might not disappear from among his relatives and from his village. You are witnesses today.”