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