"Merele sale sunt dulci!"

Translation: His apples are sweet!

[dogbuster2005]

sale goes for both genders, but sai and ei only go for feminine, and lui and I can't remember what else goes with masculine gender. Right?

[ElMeuNom]

Sale and săi work for both genders. Lui is masculine and ei is feminine.

[LucasBucchile]

Are you sure sai can't be used for masculine?

[MavisQuiddle]

Săi can be used for both masculine and feminin

[mjf92]

Săi can mean "his" or "hers".