It was narrated from Abu Hurairah that:
the Messenger of Allah (ﷺ) ruled concerning preemption of land that has not been divided; if the boundaries have been set then there is no preemption. (PT)
English reference (PT): Vol. 3, Book 17, Hadith 2497 (PT)
Arabic reference (PT): Book 17, Hadith 2592 (PT)