By 'Ali Muhammad as-Sallabi. the era of Calipha 'Umar Ibn al-Khattab, whose life began in Jahiliyah (the period of ignorance) and ended in the Golden Age of Islam, offers a window into an exciting and important period of Islamic history, and it also reminds of an important lesson, that our strength comes not from wealth or money or status, but from our submission to Allah and our commitment to the path of Islam. Discover the great story of the Second Caliph of Islam. Islamic International, English, Hardback, 2 Vol, Pages: 1021.