"o ye believers! devour not each other’s property among yourselves unlawfully save that be trading by mutual consent. woe to the cheaters! who, when they take measure of their dues from men take it fully: and when they measure out to others or weigh out for them, they give less than is due. and give full measure when you measure out and weigh with true balance. this is fair and better in the end." - from the holy koran this passage from the qur'an is important to describe the spread of islam because a) profit was important to muhammad. b) islam was spread by many merchants. c) people were paid to convert to islam. d) warfare was vital to the appeal of islam.