Is it permissible to marry a person infected with Hepatitis B while falsifying the health certificate? And is that considered casting oneself into destruction? And will one be rewarded for marrying such a person? And does the ruling differ if there is a kinship tie?

There is no objection to the marriage of a person with AIDS if there is mutual consent and the contagion is secured by the presence of a vaccine. This is not considered casting oneself into destruction. As for forgery, it is permissible to obtain a legitimate right when there is an urgent need, and the sin is on the one who prevents it. In this marriage, there is a reward if the intention and purpose are sound, due to its relief of distress and chastity, for whoever relieves a believer of a worldly distress, Allah will relieve him of a distress on the Day of Resurrection.