Existence of wants being the starting point and basis of economic activity,it seems logical to deal with consumption first.The word consumption is used here in a particular sense,that is,satisfaction of human wants.It implies production of wealth without one cannot conceive of consumption.Needless to say that there is no limit to human wants.They are insatiable.Therefore,Islam enjoins moderation and self-control and exhorts its followers to avoid luxuries in favour of those in want.Plain living and high thinking should be the motto.