belongs to him/her
Il faut prendre à César tout ce qui ne lui appartient pas.
We must take from Caesar everything that does not belong to him.
Bon, s'il trouve quelque chose, ça lui appartient.
Well, if he finds something, it belongs to him.
Ça lui appartient encore, tu es sûre ?
It still belongs to him, are you sure?
Comment savez-vous que ça lui appartient ?
How do you know it belongs to him?
The house belongs to him.
This land belongs to him.
Cette voiture-ci lui appartient.
This car belongs to him.
Le cahier ne t'appartient pas, il lui appartient.
The notebook isn't yours; it belongs to him/her.