Mishkat al-Masabih 27 Fitan كتاب الفتن 8

وَعَنْ أَبِي سَعِيدٍ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «يُوشِكُ أَنْ يَكُونَ خيرَ مالِ المسلمِ غنمٌ يتبع بهَا شغف الْجِبَالِ وَمَوَاقِعَ الْقَطْرِ يَفِرُّ بِدِينِهِ مِنَ الْفِتَنِ» . رَوَاهُ البُخَارِيّ

Abu Sa’id reported God’s messenger as saying, “A Muslim’s best property will soon be sheep which he will take to the tops of the mountains and the places where the rain falls, fleeing with his religion from civil strife.” Bukhari transmitted it.