Those are the very things which are acquired by speaking - הן הן הדברים הנקנים באמירה
Summary:
The רשב"ם maintains that the pledges are נקנין באמירה if the קידושין took place immediately afterwards. The ר"ת maintains that they are נקנין באמירה only by the first marriage (and only the father’s pledge; not the brothers’ or mother’s).