Saphatic Pyramid, Code: ASA 13. The ancient rishis understood that man by nature is very changeable and will not always live and work as per the rules of Vastu. But by not doing so, he shall be punished by the Vastu Dev. Hence they evolved a Vastu Dosh Nivaran Yantra, which if affixed at the entrance of the house and forgiveness is asked for any mistakes in vastu setting, the native lives happily despite Vastu problems