Ruling on draws for cars
Question

                What is the ruling on draws for cars or for household appliances such as washing machines, freezers, TVs etc. that are held by some markets and businesses?
Praise be to Allah. 
          That is not permitted, because they are benefiting themselves 
          and harming others. They offer a prize of a car or freezer, etc., and 
          say that whoever buys such and such can take part in this competition, 
          and we will draw one of the names, and if he wins he will get a car 
          worth one hundred thousand or whatever. So the people rush to them and 
          maybe ten thousand or twenty thousand customers come, but only one will 
          win the competition and the rest will lose. Thus they harm the owners 
          of other stores because the people rush to them and ignore the other 
          stores which causes harm to the others.