Musnad Abu Ya'la al-Mawsili 155:325

Yahya ibn Ayyub narrated to us, Ismail ibn Ja'far narrated to us, he said: Muhammad informed me, from Abu Salamah, from Ibn Qariz, from Abu Hurairah, that the Messenger of Allah (may Allah bless him and grant him peace) said: "A prayer in this mosque of mine is better than a thousand prayers in what is other than it, except for the Sacred Mosque (al-Masjid al-Haram)."