Malik related to me from Abd ar-Rahman ibn Abd ar-Rahman ibnSasaca from his father that Abu Said al-Khudri said that the Messengerof Allah, may Allah bless him and grant him peace, said, "It will soonhappen that the best property of a muslim will be sheep which he takesto the peaks of the mountains and the valleys, fleeing with his deenfrom trials."
USC-MSA web (English) reference: Book 54, Hadith 16
Arabic reference: Book 54, Hadith 1781