Thus, if he has intercourse with the woman from whom he pronounced zihār at a time when fasting is not obligatory—either because it is one of the days of Eid, the Days of Tashrīq, he is travelling, or it is nighttime—he is sinful, but the consecutiveness is not interrupted, because he is not fasting. If, however, he has intercourse with her while fasting, the consecutiveness is interrupted—not because he had intercourse with her before completing the fast, but because he broke his fast during the two months, whereas Allah, Glorified and Exalted is He, stipulated that the two months be consecutive.
Accordingly, if he has intercourse with her forgetfully on days when he is fasting, then the correct view, in our opinion, is that the fast is not invalidated, even by forgetful intercourse. Since the fast is not invalidated, the consecutiveness continues. But if he has intercourse with her while fasting and without an excuse, the consecutiveness is interrupted, because he has broken his fast.
His statement, “If he has intercourse with another woman at night, the consecutiveness is not interrupted,” means another wife or a female slave. If he has intercourse with another woman at night, the consecutiveness is not interrupted; but if it is during the day, it is interrupted, because he has broken his fast, and once he breaks his fast, the consecutiveness is interrupted. The correct view is that if he has intercourse with another woman during the day out of ignorance or forgetfulness, the consecutiveness is not interrupted, on the basis that this does not invalidate his fast.
Nevertheless, in al-Rawḍ (1), it says: “If he has intercourse with another woman—that is, someone other than the woman from whom he pronounced zihār—at night, forgetfully, or with an excuse that permits breaking the fast, the consecutiveness is not interrupted.” Here they have held that it does not interrupt the consecutiveness; what is meant is that we do not regard his fast as invalidated. We have previously mentioned that the established school, in the chapter on fasting in Ramadan, holds that intercourse invalidates the fast even if it occurs forgetfully.