Who is the written book hajjatul baliga?

There is no known written book called "Hajjatul Baliga". It's possible there's a misspelling or a variation in the title.

To help me find the correct book, could you provide more information? For example:

* Is it a book about Hajj?

* What language is the book in?

* Do you know any other details about the book, like the author or publisher?

With more information, I can help you find the book you're looking for.