What is the ruling on a husband cursing his wife with obscene language and accusing her of apostasy after a long argument, knowing that the husband regrets his actions?

The marital relationship must be based on affection, mercy, respect, and avoidance of contention. Cursing a Muslim is forbidden and considered a transgression, especially between spouses who have been commanded to treat each other with kindness. Remorse for a sin is repentance, but a sin related to the rights of a human being requires forgiveness from the other party.