To establish 'good and sufficient cause' for rescission of judgment under Rule 63, an applicant must prove: (a) reasonableness of explanation for default; (b) bona fides of the application; and (c) bona fides of defence on merits with prospects of success. Section 120 of the Administration of Estates Act requiring the Master's consent for private sales applies only where the deceased left a will, not in intestate estates. Once the Master approves a final distribution account under section 68E of the Act, he becomes functus officio and need not be cited in subsequent proceedings to enforce that account. An Executrix Dative who fails to implement a lawfully approved final distribution account acts unlawfully and can be compelled by court order to complete the distribution. The doctrine nemo ex suo delicto meliorem suam conditionem facere potest prevents a person from defeating another's rights through their own bad faith. In rescission applications, an attorney's negligence can be visited upon the litigant where the litigant has adopted a lax attitude and failed to exercise diligence.