обеих

both of them

ɐ bʲ e ɪ x → оба
обе both + их genitive
pronoun · dual feminine, genitive Rare #44,654
both of them Used for an all-female group; this form is used for the object of a verb.
RU: Я пригласил обеих.
EN: I invited both of them.
Forms of оба

Не пытайся забрать обеих.

Don't try to take both.

— Порко Россо (1992)

Обеих арестовали.

Both were arrested.

Они любят их обеих.

They love them both.