Musnad Abu Ya'la al-Mawsili 155:40

From Abu Hurairah, attributing it to the Prophet, may Allah bless him and grant him peace, he said: "Do not undertake a journey except to three mosques: this mosque of mine, the Sacred Mosque (al-Masjid al-Haram), and the Furthest Mosque (al-Masjid al-Aqsa)."