The book Taqreeb al-Tahdheeb
Question

                There is a book by Ibn Hajar al-‘Aqsallaani entitled Taqreeb al-Tahdheeb. What does this title mean, and what is the story of this book?
Praise be to Allah.
    This book is a highly condensed summary of a large book about 
    the names and status of narrators of hadeeth. 

    Al-Haafiz al-Maqdisi (may Allaah have mercy on him) wrote his 
    book entitled al-Kamaal fi Asma’ al-Rijaal, in which he recorded the 
    sayings of the imams concerning the narrators of the two Saheehs and 
    the four Sunans, relying on the histories of al-Bukhaari, the book of 
    Ibn Abi Haatim, the book of Ibn Mu’een, his companions and so on. 
Then al-Haafiz al-Mazzi shortened the book 
    and called it Tahdheeb al-Kamaal. Then Ibn Hajar al-‘Asqallaani 
    shortened it further and added some material that was omitted by the two 
    earlier scholars, which was a great deal of material. He called this summary
    Tahdheeb al-Tahdheeb. Then he condensed it further in the book called
    Taqreeb al-Tahdheeb.