This research examines the revocation of a testament from the perspective of Islamic inheritance law based on the Malang Religious Court Decision Number 653/Pdt.G/2023/PA.Mlg. The research problem arises from the existence of a testament formally executed before a notary, whose legal enforceability was subsequently challenged due to its implications for the inheritance rights of the deceased’s heirs. This study aims to identify the judicial considerations underlying the revocation of the testament and to examine its legal consequences for the testamentary deed, the legal position of the heirs, the inherited property, and the distribution of the estate. The research employs normative juridical methods using statutory and case approaches. Legal materials were examined through relevant legislation, the Compilation of Islamic Law, legal doctrines, and Decision Number 653/Pdt.G/2023/PA.Mlg, followed by qualitative analysis. The findings demonstrate that the judges did not assess the testament solely on the basis of its formal validity as an authentic deed, but also examined its substantive provisions, the status of the parties as heirs, and its compatibility with Islamic inheritance principles. The revocation consequently removes the testamentary provisions as the legal basis for determining rights over the deceased’s estate, thereby placing the settlement and distribution of the inherited property within the framework of Islamic inheritance law and the Compilation of Islamic Law.