Now in former times in Israel, concerning the redemption or exchange of property, to make any matter legally binding a man would remove his sandal and give it to the other party, and this was a confirmation in Israel.
KJV
Now this [was the manner] in former time in Israel concerning redeeming and concerning changing, for to confirm all things; a man plucked off his shoe, and gave [it] to his neighbour: and this [was] a testimony in Israel.
ASV
Now this was the custom in former time in Israel concerning redeeming and concerning exchanging, to confirm all things: a man drew off his shoe, and gave it to his neighbor; and this was the manner of attestation in Israel.