On the other hand, Usmani preached that an Islamic economy free of the "imbalances" in society — such as concentration of "wealth in the hands of the few", or monopolies which paralyze or hinder market forces — would "follow" from obeying "divine injunctions" by banning interest (along with other Islamic efforts). (Later in his book "Introduction to Islamic Finance", he argues that Islamic principles should include "the fulfillment of the needs of the society" giving "preference to the products which may help the common people to raise their standard of living", but that few Islamic banks have followed this path.) Another source (Saleh Abdullah Kamel), described the changes anticipated for the Muslim community by following Islamic approach to economics, banking, finance, etc., as a "move towards economic development, creation of the value added factor, increased exports, less imports, job creation, rehabilitation of the incapacitated and training of capable elements".