What is the ruling on the precautionary return of a wife [to her husband] after it becomes clear that a divorce did not occur or there is doubt concerning it, and is this return counted as a divorce, especially if it is due to obsessive doubts about divorce?

If the husband doubts that a divorce has occurred and takes his wife back as a precaution, then the reconciliation is valid and removes the doubt, and this does not result in a divorce. However, one who suffers from obsessive thoughts must not pay attention to these thoughts, nor should he indulge them under the pretext of precaution.