It is narrated from Sayyiduna Abu al-Ja'd al-Damri (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Saddles are not to be fastened for travel except to three mosques: al-Masjid al-Haram, this mosque of mine, and al-Masjid al-Aqsa."
Hadith Referenceالمعجم الكبير للطبراني / مسند من يعرف بالكنى / 19122