What is the ruling on one who swore an oath of divorce upon his pregnant wife in her seventh month due to frequent family visits, and what is the expiation for this oath?

The majority of scholars hold that a conditional divorce takes effect if the condition it is contingent upon is met. Some scholars differentiate between what was intended as a divorce and what was intended as a threat; the former takes effect, while the latter only requires an expiation for an oath. This difference of opinion pertains to explicit oaths in conditional divorce. As for the statement, "If you come back to me, consider yourself divorced," this is an indirect expression, and divorce does not take effect unless the husband intended divorce by it. It is recommended to avoid anger.