It is narrated from Jabir (may Allah be pleased with him) that he said the Prophet (peace and blessings be upon him) said: "The right of pre-emption applies to property that has not been divided; when the boundaries have been determined, there is no right of pre-emption."
Hadith Referenceمسند الإمام الشافعي / كتاب الشفعة والصلح وإحياء الموات / 1491
Hadith Takhrijأخرجه مسلم المساقاة، باب الشفعة (1608)۔