buy him/her
"Dile que le compre unos pantalones".
Tell him to buy her some trousers.
— Утомлённые солнцем (1994)
Tom no sabe lo que Mary quiere que él le compre para su cumpleaños.
Tom doesn’t know what Mary wants him to buy her for her birthday.
Creo que es hora de que le compre un coche a mi hijo.
I think it’s time I bought my son a car.