Parashas Chayei Sarah · Passuk 23:8
And he spoke with them, saying, “If it is your will that I bury my dead from before me, hear me and intercede for me with Ephron son of Tzochar,
Rashi on Bereishis 23:8 / Bereshit Rabbah (classical source on this passuk; not listed as a numbered Torah Temimah unit here).
Lemma / focus: ופגעו לי.
English: “Your soul” means your will. “Intercede for me” is language of entreaty, as in “Do not entreat me.”
Derash on the verse (Rashi) — not a formal named middah of the 13: the verb is identified by parallel usage as a term of entreaty.
Avraham does not demand the cave; he asks the people of Cheis to intercede with Ephron on his behalf if it is their will that he bury his dead.