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. Download link 1 Download link 2