Personal is personal- property or law! How can public authority interfere with something that is entirely personal. So is personal law of a community. Muslim personal law is derived from Holy books and not legislation. Then how can any court change the personal law. Even in matters concerning social justice and women empowerment, courts have no jurisdiction. A court decides only that which is legislated. Muslim personal law is not legislated but derived from scriptures. Then who can change the law? should the community itself not consider changes to conform to modern times.
https://in.news.yahoo.com/court-cannot-test-validity-personal-032400490.html