Is the child attributed to his father if he had intercourse with her while she was an apostate without his knowledge, and then she conceived from him and gave birth, and then she repented and returned to Islam?

The child is attributed to the husband if his intercourse was due to a misconception, and this is by the consensus of scholars. Every marriage that the husband believed to be permissible, his child is attributed to him, and they inherit from each other, even if the marriage was invalid in reality.