What is the ruling on intentionally not waking a fasting husband for the Maghrib call to prayer, as a form of punishment, knowing that he does not await the Maghrib call to prayer like those who are fasting?

Breaking the fast intentionally in the daytime of Ramadan without a legitimate excuse is a grave sin and a major transgression. It is considered a violation of the sanctity of this time and a disobedience to Allah's command. Al-Dhahabi mentioned that whoever abandons the fast of Ramadan without a legitimate excuse is worse than an adulterer and an alcoholic, and their Islam is doubted. Smoking is not among the permissible excuses for breaking the fast; it is forbidden. You must advise your husband and remind him of Allah and His punishment, and wake him for prayer even if he has broken his fast. If he also abandons prayer, then there is no good in staying with him.