How are a husband and wife separated in an invalid marriage? And does a divorce declared by the husband to his wife in an invalid marriage take effect, even if it occurred during a moment of anger or menstruation? And is the previous declaration of divorce counted, or must the husband divorce her again, or resort to the court?

Issues of disputes and conflicts, including this case where the man claims the marriage is valid and that a divorce due to anger did not occur, while you mention that another party issued a fatwa stating the marriage is invalid, fall under the jurisdiction of the Sharia courts. Consulting the Sharia court is paramount because the judge can summon both parties, hear their testimonies, request evidence, and his ruling is binding and resolves disagreements in matters of ijtihad.