(85) باب فَضْلِ الْمَدِينَةِ وَدُعَاءِ النَّبِيِّ صلى الله عليه وسلم فِيهَا بِالْبَرَكَةِ وَبَيَانِ تَحْرِيمِها وَتَحْرِيمِ صَيْدِهَا وَشَجَرِهَا وَبَيَانِ حُدُودِ حَرَمِهَا
Rafi' b. Khadij reported Allah's Messenger (ﷺ) as saying:
Ibrahim declared Mecca as sacred and I declare sacred the area between its two stony grounds (lava lands by which he meant Medina).
Reference: Sahih Muslim 1361 a
In-book reference: Book 15, Hadith 519
USC-MSA web (English) reference(deprecated numbering scheme): Book 7, Hadith 3151