The 5th book of the series entitled "Qachaq Hajar" was published by Khazar University Publishing House. The author of the book is Tahmina Asgarova.

The book is dedicated to Hajar Khanali, the wife and comrade-in-arms of the national hero Qachaq Nabi. In the chapter entitled "Male or female, a lion is a lion", the author points out that the name of Hajar, who lived a life full of heroic pages on horseback for more than twenty years, went down in history as a symbol of bravery and fearlessness.

In the chapters of the book "A life turned into an epic" and "The Image of Nabi-Hajar in Literature and Art", Tahmina Asgarova provides detailed information about Nabi and Hajar in folk literature and fiction, in ashuq and sculptural works, as well as in documentaries and feature films. The book also contains relevant photographs.