twenty-three years of the commencement of his mission, the whole of Arabia was brought into the fold of Islam, while in the next two decades the Roman and the Sassanid empires,— the two great empires of the world
greatest of all Prophets, before or after him. The expansion of Islam is the most miraculous of all miracles. (Historical Role of Islam, p.4)
Seeing an Advantage Amidst Disadvantages
After attaining