וַיֹּ֧אמֶר הַגֹּאֵ֛ל לְבֹ֖עַז קְנֵה־לָ֑ךְ וַיִּשְׁלֹ֖ף נַעֲלֽוֹ׃
So the near kinsman said unto Boaz: ‘Buy it for thyself.’ And he drew off his shoe.
Read Kabbalistic (mystical) interpretations of Ruth 4:8: Zohar and classical Jewish mystical sources, free online.