2. Royal authority calls for urban settlement.
This is because, when royal authority is obtained by tribes and groups, (the tribes and groups) are forced to take possession of cities for two reasons. One of them is that royal authority causes (the people) to seek tranquility, restfulness, and relaxation, and to try to provide the aspects of civilization that were lacking in the desert. The second (reason) is that rivals and enemies can be expected to attack the realm, and one must defend oneself against them.
A city situated in a district where (rivals of the dynasty) are found, may often become a place of refuge for a person who wants to attack (the tribes and groups in authority) and revolt against them and deprive them of the royal authority to which they have aspired.8 He fortifies himself in the city and fights them (from there). Now, it is very difficult and troublesome to overpower a city.9 A city is worth a great number of soldiers, in that it offers protection from behind the walls and makes attacks difficult, and no great numbers or much power are needed. Power and group support are needed in war only for the sake of the steadfastness provided by the mutual affection (tribesmen) show each other in battle. The steadfastness of (people in a city) is assured by the walls of the city. Therefore, they do not need much group support or great numbers (for defense). The existence of a city and of rivals who fortify themselves in it thus eats into the strength of a nation desiring to gain control and breaks the impetus of its efforts in this respect. Therefore, if there are cities in the tribal territory of (a dynasty, the dynasty) will bring them under its control, in order to be safe from any weakening (of its power, should the cities fall under control of its rivals). If there are no cities, the dynasty will have to build a new (city), firstly, in order to complete the civilization of its realm and to be able to lessen its efforts, and, secondly, in order to use (the city) as a threat against those parties and groups within the dynasty that might desire power and might wish to resist.
It is thus clear that royal authority calls for urban settlement and control of the cities.
"God has the power to execute His commands." 10