his/her friends
Tom e Mary sono suoi amici?
Are Tom and Mary his friends?
She and I are her friends.
So che Tom e Mary erano suoi amici.
I know that Tom and Mary were friends of his.
Penserà che i nemici del suo nemico siano suoi amici.
He will think that his enemy's enemies are his friends.
— RRR (2022)
They say they are his friends.