Sayyiduna Abdullah bin Zayd (may Allah be pleased with him) narrates from the Messenger of Allah (peace and blessings be upon him) that he said: "Ibrahim (peace be upon him) made Makkah sacred and prayed for it. I have made Madinah sacred just as Ibrahim (peace be upon him) made Makkah sacred, and I have prayed for blessing in its mudd and its sa' just as Ibrahim (peace be upon him) prayed for Makkah."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الحج / 9955