Musnad Abu Ya'la al-Mawsili 150:187

Abu Kurayb narrated to us, Mus'ab ibn al-Miqdam narrated to us, from Isra'il, from Ibrahim ibn al-Muhajir, from Jabir al-'Allaf, [who said]: Ibn al-Zubayr narrated to us, from 'Aishah, who said: The Messenger of Allah (may Allah bless him and grant him peace) said: "A prayer in my mosque is better than a thousand prayers in what is other than it."