Rashi on Genesis
מי אלה לך WHO ARE THESE WITH THEE? (literally, to thee)? — Who are these that they should be yours (are they your children or your servants)?
Ramban on Genesis
WHO ARE THESE WITH THEE? Esau inquired about the women and children, and Jacob modestly answered, The children whom G-d hath graciously given thy servant, as he did not want to say that they were his wives. Esau thereby understood that they were the mothers of the children.
Sforno on Genesis
Who are these to you. Are they your children or your servants?.