The passage describes the arrival of the Mahdist forces in Khartoum, their initial actions, and the reactions of the population. It mentions the Mahdi's arrival, the surrender of the garrison, and the subsequent events that led to the fall of the city. The text also touches upon the fear and uncertainty that gripped the inhabitants, as well as the Mahdi's pronouncements and the establishment of his authority. The passage highlights the dramatic shift in power and the profound impact of the Mahdist conquest on Khartoum and its people.