Sahih al-Bukhari 3301Book 59, Hadith 109
حَدَّثَنَا عَبْدُ اللَّهِ بْنُ يُوسُفَ، أَخْبَرَنَا مَالِكٌ، عَنْ أَبِي الزِّنَادِ، عَنِ الأَعْرَجِ، عَنْ أَبِي هُرَيْرَةَ ـ رضى الله عنه ـ أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ " رَأْسُ الْكُفْرِ نَحْوَ الْمَشْرِقِ، وَالْفَخْرُ وَالْخُيَلاَءُ فِي أَهْلِ الْخَيْلِ وَالإِبِلِ، وَالْفَدَّادِينَ أَهْلِ الْوَبَرِ، وَالسَّكِينَةُ فِي أَهْلِ الْغَنَمِ ".
Allah's Messenger (ﷺ) said, "The main source of disbelief is in the east. Pride and arrogance are characteristics of the owners of horses and camels, and those bedouins who are busy with their camels and pay no attention to Religion; while modesty and gentleness are the characteristics of the owners of sheep."