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. (ID)
English reference (ID): Vol. 3, Book 17, Hadith 2497 (ID)
Arabic reference (ID): Book 17, Hadith 2592 (ID)