Is it permissible for a mother to visit the home of her relatives after they have moved to another house, if her son swore a triple divorce upon his wife if she visited them in their old house? And is it permissible to adopt the fatwa of someone who ruled that no divorce occurred in such a case?

The preponderant view, according to us, is that a conditional divorce takes effect upon the fulfillment of the condition, regardless of whether the husband intended to effect the divorce, to threaten, or to emphasize. The decisive factor in determining the condition is the husband's intention, because intention specifies the general. So, if your brother intended, by preventing his mother from entering a certain person's house, that this be for a specific time or for a specific reason, then if that time passes or that reason ceases to exist, he does not break his oath by her entering. And whoever has sought a fatwa from a scholar trustworthy in his religion and knowledge may act upon his fatwa, and he is not obligated to consult anyone else.