What is the ruling on a husband hitting his wife for insulting his family, and on the husband's family entering their son's apartment without his wife's permission?

If the apartment and furniture are owned by the wife, the husband has no right to object to her giving the key to her family and allowing them to benefit from it. However, if they are owned by the husband, the wife is not permitted to allow her family to enter without his consent.

The spouses should discuss these matters with understanding and without insults. The wife should be keen to treat her husband's family well and overlook their mistakes.