The second book in the “History of the Caliphate” series is dedicated to the personality of the second righteous caliph ‘Umar ibn al-Khattab, the best of the companions after Abu Bakr al-Siddiq. The life of Caliph ‘Umar is one of the golden pages of Islamic history. The era of the righteous caliphs is full of valuable lessons and edifications. Like scattered pearls, these lessons have been hidden in numerous works related to the topic mentioned. These are books on history, fiqh, literature, interpretation of the Koran and, of course, collections of hadiths. The author of this book has done a great job, collecting and processing a lot of material, and you are given a unique opportunity to get acquainted with the fruits of his labors. You will learn about the character of 'Umar, how he treated members of his family and members of the family of the Messenger of Allah r, how he worshiped the Lord, encouraged him to do what was approved by Sharia and restrained him from what was condemned, how, having become a caliph, he monitored the observance of the laws of the Almighty in his state. You will learn about his life before and after accepting Islam, his virtues and deeds, as well as the circumstances of his tragic death and how the last days of his earthly life passed. The book will also be useful to those who are interested not only in the personality of the second righteous caliph Umar ibn al -Khattab, but also the historical era in which he lived.