וַיֹּ֣אמֶר הַגֹּאֵ֗ל לֹ֤א אוּכַל֙ לגאול־[לִגְאָל־] לִ֔י פֶּן־אַשְׁחִ֖ית אֶת־נַחֲלָתִ֑י גְּאַל־לְךָ֤ אַתָּה֙ אֶת־גְּאֻלָּתִ֔י כִּ֥י לֹא־אוּכַ֖ל לִגְאֹֽל׃
And the near kinsman said: ‘I cannot redeem it for myself, lest I mar mine own inheritance; take thou my right of redemption on thee; for I cannot redeem it.’—
Read Kabbalistic (mystical) interpretations of Ruth 4:6: Zohar and classical Jewish mystical sources, free online.