Ruth 4:5-8

5Then Boaz said, “On the day you buy the field from the hand of Naomi, you must also acquire Ruth the Moabitess, the widow of the deceased, in order 1to raise up the name of the deceased on his inheritance.” 6Then 2the redeemer said, “I cannot redeem it for myself, otherwise I would 3jeopardize my own inheritance. Redeem it for yourself; you may have my right of redemption, since I cannot redeem it.”

7Now this was 4the custom in former times in Israel concerning the redemption and the exchange of land to confirm any matter: a man removed his sandal and gave it to another; and this was the way of confirmation in Israel. 8So the redeemer said to Boaz, “Buy it for yourself.” And he removed his sandal.