The Book of Pilgrimage
15/95. Chapter:
The virtue of the Three Masajid
Sahih Muslim
وَحَدَّثَنَاهُ أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ، حَدَّثَنَا عَبْدُ الأَعْلَى، عَنْ مَعْمَرٍ، عَنِ الزُّهْرِيِّ، بِهَذَا الإِسْنَادِ غَيْرَ أَنَّهُ قَالَ " تُشَدُّ الرِّحَالُ إِلَى ثَلاَثَةِ مَسَاجِدَ " .
This hadith has been narrated on the authority of Zuhri (but with this change of words) that he (Allah's Apostle) said: " Undertake journey to three mosques."
Reference : Sahih Muslim 1397bIn-book reference : Book 15, Hadith 589USC-MSA web (English) reference : Book 7, Hadith 3219