Language:
كتاب المناقب
61
Virtues and Merits of the Prophet (pbuh) and his Companions
(2)
Chapter: Virtues of Quraish
(2)
باب مَنَاقِبِ قُرَيْشٍ

Narrated Abi Mas`ud:

The Prophet (ﷺ) said, "From this side from the east, afflictions will appear. Rudeness and lack of mercy are characteristics of the rural bedouins who are busy with their camels and cows (and pay no attention to religion). Such are the tribes of Rabi`a and Mudar."

حَدَّثَنَا عَلِيُّ بْنُ عَبْدِ اللَّهِ، حَدَّثَنَا سُفْيَانُ، عَنْ إِسْمَاعِيلَ، عَنْ قَيْسٍ، عَنْ أَبِي مَسْعُودٍ، يَبْلُغُ بِهِ النَّبِيَّ صلى الله عليه وسلم قَالَ ‏ "‏ مِنْ هَا هُنَا جَاءَتِ الْفِتَنُ نَحْوَ الْمَشْرِقِ، وَالْجَفَاءُ وَغِلَظُ الْقُلُوبِ فِي الْفَدَّادِينَ أَهْلِ الْوَبَرِ عِنْدَ أُصُولِ أَذْنَابِ الإِبِلِ، وَالْبَقَرِ فِي رَبِيعَةَ وَمُضَرَ ‏"‏‏.‏
Reference : Sahih al-Bukhari 3498
In-book reference : Book 61, Hadith 8
USC-MSA web (English) reference : Vol. 4, Book 56, Hadith 702
  (deprecated numbering scheme)