If a wife says, 'Divorce me for a thousand,' and the husband divorces her, what is the ruling regarding the thousand?

Primary text

If the wife says, 'Divorce me for a thousand,' and he divorces her, she owes him the thousand. The divorce is effective even if he has not yet received the money. This is a distinct case from conditioning divorce on a gift, as this statement is not a condition but an agreement on consideration.