How can a husband take back his wife, with whom he has not yet consummated the marriage, after he uttered a divorce statement jokingly or forgetfully a week after the marriage contract?

The divorce of one who jokes is effective, just like the divorce of one who is serious. If the husband uttered a clear statement of divorcing you, then the divorce has occurred, even if he did not intend it. If a valid seclusion took place between you, some scholars permit reconciliation without a new contract. However, if he uttered the divorce unintentionally, such as a slip of the tongue, then his divorce does not occur.