Sforno on Genesis 23:8/ספורנו על בראשית כ״ג:ח׳

1אם יש את נפשכם לקבור, if you want that I shall bury the dead without delay, as you have indicated when you said: במבחר קברנו קבור!" (verse 6) i.e. that I would not need to wait.

2שמעוני, agree with me that I shall receive an inalienable burial plot.

3ופגעו לי בעפרון, that he will sell me this cave even though it is not an agreeable thing for a highly placed person to sell any portion of his land-holdings. We know this from Navot (Kings I 21,3) who had been aghast at the suggestion of selling his vineyard to the king. His precise words were: חלילה לי מתתי את נחלת אבותי לך, “far be it from me to give you any part of my ancestral heritage.”