The title of the book is “Ummul Momineen Hazrat Khadija-tul-Kubra (r.a).” It is a complete biography of Hazrat Khadija (radiyallahu anha) written by Allam Muhammad Muhammadi Eshteharvi and translated into Urdu by Syed Ali Sher Naqvi. Download it in PDF format to read offline.