Does the husband's declaration, "You are forbidden to me if you leave the apartment door without my permission," with the intention of intimidation and enforcement, constitute a valid prohibition (tahreem) if she leaves, having forgotten this prohibition? And does this prohibition necessitate expiation, seeking forgiveness, and a sincere intention not to repeat it?

Scholars differ regarding a husband's prohibition of his wife. Some consider it a ẓihār (a pre-Islamic form of divorce), or a divorce, or an oath. Some differentiate based on whether he intended divorce, ẓihār, or an oath. If the husband intended an oath, then his wife's departure without his permission necessitates an expiation for breaking an oath (kaffārat yamīn). Scholars have differed on whether the oath is broken if she leaves forgetfully, but the more cautious approach is to offer the expiation for breaking an oath.