Is swearing by "it's forbidden and by divorce you will not enter their house again" considered a divorce or an oath, knowing that the intention was to prevent entry and not to divorce?

It is forbidden for the wife to visit the family of the husband's colleague if he forbids her, and she sins by disobeying him and is considered rebellious (nashiz) if she leaves without his permission. As for what you uttered regarding the prohibition and divorce of your wife if she goes to the house of your colleague's family, this entails the ruling of conditional divorce and prohibition. One must be cautious about uttering divorce and prohibition due to their severe consequences. Problems between spouses should be resolved with deliberation and understanding, and the wife should be advised and reminded of the husband's guardianship and obedience to him in what is good.