וַיֹּ֥אמֶר אֵלָ֖יו מַה־שְּׁמֶ֑ךָ וַיֹּ֖אמֶר יַעֲקֹֽב׃
And he said to him: What is your name? And he said: Yaakov.
Torah Temimah points to Chullin 91b / Bereshit Rabbah.
ויאמר אליו מה שמך — א"ל: יעקב. א"ל: לא יעקב יאמר עוד שמך כי אם ישראל.
“And he said to him: What is your name?” He said to him: Yaakov. He said to him: Your name shall no longer be called Yaakov, but Yisrael.
The dialogue leads directly into the renaming.
Derash on the renaming dialogue (Bavli / Midrash).
The angel asks Yaakov’s name as the prelude to conferring the new name Yisrael.