Ruth 3:14

3:14 So she slept beside him until morning. She woke up while it was still dark. Boaz thought, “No one must know that a woman visited the threshing floor.”

Ruth 4:7

4:7 (Now this used to be the customary way to finalize a transaction involving redemption in Israel: A man would remove his sandal and give it to the other party. This was a legally binding act in Israel.)