It is narrated from Sayyiduna Abdullah bin Zaid (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) said: Sayyiduna Ibrahim declared Makkah Mukarramah as a sanctuary and prayed for it, and I declare Madinah Munawwarah as a sanctuary just as Sayyiduna Ibrahim declared Makkah Mukarramah as a sanctuary. And I pray for blessings for the people of Madinah in their mudd and sa’ just as Sayyiduna Ibrahim prayed for the people of Makkah.
Hadith Referenceمسند احمد / مسند المدنيين رضي الله عنهم اجمعين / 16446