с его стороны

of him

→ с
phrase Rare #46,359
of him Used to describe an action or behavior as characteristic of him, often in an evaluation such as “kind of him” or “foolish of him.”
RU: Это было очень щедро с его стороны.
EN: That was very generous of him.

Очень мило с его стороны.

It was very kind of him.

— Жизнь за кадром (2000)

Очень благородно с его стороны.

It was very noble of him.

— Четыреста ударов (1959)