What is the religious ruling regarding a husband who beats his wife, insults her, and threatens her with scandal after she repents from adultery? And what is your advice to her?

Adultery is one of the grave sins, and repentance is obligatory. Everything that leads to it must be avoided. It is not permissible for the husband to assault his wife by beating or humiliating her. He must remain silent about his wife if she repents, for he is not allowed to expose her, and covering a Muslim's faults is obligatory. He must treat her kindly, and if he does not treat her kindly, then he should separate from her with grace. The wife should be patient, engage in remembrance of Allah, accompany righteous women, and occupy her time with what benefits her.