Musnad Ahmad 284:19

Yunus narrated to us, he said: Hammad—meaning Ibn Zayd—narrated to us, he said: Habib al-Mu'allim narrated to us, from 'Ata', from 'Abdullah ibn al-Zubayr, he said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "A prayer in this mosque of mine is better than a thousand prayers in other than it of the mosques, except the Sacred Mosque (al-Masjid al-Haram). And a prayer in the Sacred Mosque is better than a hundred prayers in this one."