Is it permissible for the husband to reclaim a property he presented to his wife as a dowry, after her infidelity and bearing a child from another man have been proven by DNA analysis, knowing that the value of the property exceeds half a million dollars?

Consummation with the wife obligates the full mahr. The wife's right to her mahr is not forfeited if she commits adultery. However, if the husband ascertains his wife's lack of chastity, he may put pressure on her until she relinquishes her mahr to him. It is important to note that accusing the wife of indecency is impermissible unless there is clear evidence. The husband does not have the right to disavow the paternity of a child born on his marriage bed based on DNA analysis. The only legitimate way to disavow a child is through li'an (mutual imprecation).