Ruth 4:5-8

5Then Boaz said, “The day that you buy the field from Naomi, you must also acquire Ruth the Moabitess, the widow of the deceased, to restore the name of the deceased to his inheritance.”

6The closest relative (redeemer) said, “I cannot redeem it for myself, because [by marrying a Moabitess] I would jeopardize my own inheritance. Take my right of redemption (purchase) yourself, because I cannot redeem it.”

7Now formerly in Israel this was the custom concerning redeeming and exchanging property. To confirm a transaction, a man pulled off his sandal and gave it to the other. This was the way of confirming and attesting in Israel.

8So, when the closest relative (redeemer) said to Boaz, “Buy it for yourself,” he pulled off his sandal [and gave it to Boaz to confirm the agreement].