у него спросить

ask him

→ у
phrase Uncommon #19,394
ask him Used with the meaning “ask him” or “ask him about it.” The phrase literally uses “at him/from him” in Russian, but in normal English it is just “ask him.”
RU: Я забыл у него спросить.
EN: I forgot to ask him.

Вообще-то, ты могла бы и сама у него спросить.

You could have asked him yourself, you know.

— Дорога, которую он выбирает (2014)