Ruth 2:3

2:3 So Ruth went and gathered grain in the fields behind the harvesters. Now she just happened to end up in the portion of the field belonging to Boaz, who was from the clan of Elimelech.

Ruth 2:22

2:22 Naomi then said to her daughter-in-law Ruth, “It is good, my daughter, that you should go out to work with his female servants. That way you will not be harmed, which could happen in another field.”

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.”