Hadith 160

He also reported God’s messenger as saying, “Faith will shrink back to Medina as a snake shrinks back to its hole.” (Bukhari and Muslim.)

وَعَنْ أَبِي هُرَيْرَةَ رَضِيَ اللَّهُ عَنْهُ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «إِنَّ الْإِيمَانَ لَيَأْرِزُ إِلَى الْمَدِينَةِ كَمَا تأرز الحيية إِلَى جحرها»

Reference: 5601600
In-book reference: Book 1, Hadith 160