Musnad Ahmad 33:665

Hujayn and Yunus narrated to us, they said: Al-Layth ibn Sa'd narrated to us, from Abu al-Zubayr, from Jabir ibn Abdullah, from the Messenger of Allah, peace and blessings of Allah be upon him, that he said: "Indeed, the best [place] to which mounts are ridden is this mosque of mine, and the Ancient House."