What is the ruling on one who swore by divorce that a person said a specific statement, and he was truthful in his intention at the time of swearing, but then became afflicted with misgivings regarding the exact wording that person said?

A divorce whose occurrence is doubted is not considered to have occurred, because the marriage is established with certainty and is not removed by doubt. This applies to someone who is not afflicted by misgivings (waswas), and it is even more fitting that it does not occur if it is merely a misgiving.