صحیح ابن حبان
Ibn Hibban
كتاب الصلاة
Book of Prayer
باب المساجد - ذكر البيان بأن المصطفى صلى الله عليه وسلم لم يرد بهذا العدد نفيا عما وراءه
Chapter on Mosques - Clarification that the Prophet did not mean to exclude other mosques by the mentioned number.
1 hadith
Hadith 1617
Sayyiduna Abu Sa'id Khudri (may Allah be pleased with him) narrates: The Noble Prophet (peace and blessings of Allah be upon him) said: "Journeys should only be undertaken towards three mosques: Al-Masjid Al-Haram, Al-Masjid Al-Aqsa, and this mosque of mine."