Musnad Abu Ya'la al-Mawsili 118:85

Qasim ibn Abi Shaybah narrated to us, Wahb ibn Jarir narrated to us, from his father, from Yunus al-Ayli, from al-Zuhri, from Anas, that the Prophet (peace and blessings of Allah be upon him) said: "O Allah, grant Medina twice the amount of blessing that is in Mecca."