Is a Muslim considered an apostate if he mocks a Quranic verse unintentionally and not out of sarcasm? And is general repentance sufficient for him if his act was apostasy? If so, what is the ruling on his marriage that took place before his repentance, and are his children considered illegitimate?

Mocking and ridiculing the religion of Allah is an act of disbelief that expels its perpetrator from the fold of Islam, whether done seriously or in jest. Whoever commits such an act must hasten to sincere repentance, for sincere repentance erases sins. The evidence for this is Allah's saying: "Except for those who repent, believe and do righteous work. For them Allah will replace their evil deeds with good ones. And ever is Allah Forgiving and Merciful." (25:70). Moreover, remorse is repentance, which is the heart's anguish over what it has done and wishing it had not done it. If a person repents with a general, sincere repentance before marriage, then their marriage is valid, and they are not required to separate from their wife or renew the contract.