פירוש על קידושין 117:10

Had the money been given to her as a deposit or a loan she would not be betrothed. But that is not the case. The money he gave her is not a deposit. It’s her money and when she uses it she is not using the original owner’s money. It’s also not a loan because a loan would be given for her to use and therefore there would be no money around at the time of betrothal. Here, the money was for betrothal.