Ruth 4:5-8

5Then said Boaz, What day thou buyest the field of the hand of Naomi, thou must buy it also of Ruth the Moabitess, the wife of the dead, to raise up the name of the dead upon his inheritance. 6And the kinsman said, I cannot redeem it for myself, lest I mar my own inheritance: redeem thou my right to thyself; for I cannot redeem it . 7Now this was the manner in former time in Israel concerning redeeming and concerning changing, for confirming all things; a man took off his shoe, and gave it to his neighbour: and this was a testimony in Israel. 8Therefore the kinsman said to Boaz, Buy it for thyself. So he drew off his shoe.