Article 483

Where an immovable property has been sold in execution of a decree, the decree-holder, or any person entitled to share in a ratable distribution of assets, or whose interests are affected by the sale, may apply to the court to set aside the sale on the ground of a material irregularity or fraud in publishing or conducting it: Provided that no sale shall be set aside on the ground of irregularity or fraud unless the applicant satisfies the court that he has sustained substantial injury by reason of such irregularity or fraud.