´Abu Sa'eed Al-Khudri narrated that :` Allah's Messenger said: "A mount is not saddled (for a journey) except to three Masajid: Al-Masjid Al-Haram, this Masjid of mine, and Masjid Al-Aqsa." [Abu `Eisa said:] This Hadith is Hasan Sahih.
Hadith ReferenceSunan at-Tirmidhi / The Book on Salat (Prayer) / Hadith: 326