"Tahthib Al-Kamal fi Asma' Al-rijal" (Arabic: تهذيب الكمال في أسماء الرجال) is a book by Jamal al-Din al-Mizzi (654-742 AH), where he refined, revised, and added upon the work of Abd al-Ghani al-Maqdisi in his book Al-Kamal fi Asma' al-Rijal.
The book is an important resource in the field of biographical evaluation within Islamic studies.
Thus, he increased the original biographies by more than seventeen hundred.
[1] Al-Mizzi also added to most of the original biographies new historical material about the teachers of the subject of the biography, his students, what was said about him in terms of criticism, correction, or authentication, the date of his birth or death, and so on, so that most of the biographies expanded greatly.
[2] After all this, Al-Mazi added four important chapters to the end of his book, which the author of 'Al-Kamal' did not mention: