أَخْبَرَنَا مُحَمَّدُ بْنُ مَنْصُورٍ، قَالَ حَدَّثَنَا سُفْيَانُ، عَنِ الزُّهْرِيِّ، عَنْ سَعِيدٍ، عَنْ أَبِي هُرَيْرَةَ، عَنْ رَسُولِ اللَّهِ صلى الله عليه وسلم قَالَ ‏"‏ لاَ تُشَدُّ الرِّحَالُ إِلاَّ إِلَى ثَلاَثَةِ مَسَاجِدَ مَسْجِدِ الْحَرَامِ وَمَسْجِدِي هَذَا وَمَسْجِدِ الأَقْصَى ‏"‏ ‏.‏

It was narrated from Abu Hurairah that the Messenger of Allah (PBUH) said: "Mounts are not saddled for except to (travel to) three Masjids: Al-Masjid Al-Haram, this Masjid of mine, and Al-Masjid Al-Aqsa." Translation Not Available

Book Ref: Sunan An Nisai Book 8 Hadith 700
Web Ref:  Sunan An Nisai Vol 1 Book 8 Hadith 701