Tafsir of An-Nur 24:7

And the fifth; the invoking of the curse of Allah on him if he be of those who tell a lie. If he says that, then she is divorced from him by the very act of this Li`an; she is forever forbidden for him and he must give her Mahr to her. The punishment for Zina should be carried out on her, and nothing can prevent the punishment except if she also swears the oath of condemnation (Li`an) and swears by Allah four times that he is one of those who lied, i.e., in what he is accusing her of;

والخامسة أن غضب الله عليها إن كان من الصادقين

And the fifth; should be that the wrath of Allah be upon her if he speaks the truth