1.Hazrat Abu Bakr Siddique (R.A)-"No one has been a better Companion to Me than Abu Bakr (R.A). This is the highly regard-able and appreciable statement of the Holy Prophet for Hazrat Abu Bakr due to his devotion, struggle, and sacrifices for pro- pagation of Islam from early period. Hazrat Abu Bakr was so much dedicated to Islam and the Holy Prophet, that he always tried his level best to keep intact with the purity of Islam and follow Prophet Muhammad (S.A.W) instructions. 2.Hazart Omar Farooq (R.A)-The book narrates in detail the complete biography (Seerah) of the second caliph of Islam, a great com- mander, jurist and a man of extraordinary intellect. The author has also explained in details how he succeeded in expending the frontier of Islamic state. The book written by a prominent scholar Shah Moinuddin Nadvi in a very simple language. 3.Hazart Uthman Ghani (R.A)-The book narrates in detail the complete biography (Seerah) of the third caliph of Islam who got the honour of being called as Zun Norayn. Every Muslim is in- debted to him for the preparation and authenticating the standard copy of the Holy Qur'an. The author Shah Moinuddin Nadvi has explained all his achievements in a very simple language, based on Holy Qur'an and Ahadeeth. 4.Hazrat Ali Murtaza (R.A)-The book narrates in detail the complete biography (Seerah) of the fourth caliph of Islam, Hazrat Ali. He was so gifted with extraordinary spiritual and intellectual power coupled with bravery, was given the title "Lion". He is eminent for his embracement of Islam at a very tender age. The author Shah Moinuddin Nadvi has explained all his achievements in a very simple language.