What should i do on this matter?

I have will purchase a new honda-city car.my astrologer told my wife that i might get some accident if i donot follow his advice.he advised me that the exact day when i will purchase the car from showroom I have to ask a woman to rub her sweat on my car & some portion of the car must have to become wet by her perspiration.my wife is insisted me on doing so.so,plz write to sky459522@yahoo.com sharing ur opinion.