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كتاب المناقب
61  
Virtues and Merits of the Prophet (pbuh) and his Companions
(1)
Chapter: The Statement of Allah Ta'ala: "O mankind! We have created you from a male and female."
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بَابُ قَوْلُ اللَّهِ تَعَالَى: {يَا أَيُّهَا النَّاسُ إِنَّا خَلَقْنَاكُمْ مِنْ ذَكَرٍ وَأُنْثَى وَجَعَلْنَاكُمْ شُعُوبًا وَقَبَائِلَ لِتَعَارَفُوا إِنَّ أَكْرَمَكُمْ عِنْدَ اللَّهِ أَتْقَاكُمْ}
Sahih al-Bukhari 3495, 3496

Narrated Abu Huraira:

The Prophet (ﷺ) said, "The tribe of Quraish has precedence over the people in this connection (i.e the right of ruling). The Muslims follow the Muslims amongst them, and the infidels follow the infidels amongst them. People are of different natures: The best amongst them in the pre-lslamic period are the best in Islam provided they comprehend the religious knowledge. You will find that the best amongst the people in this respect (i.e. of ruling) is he who hates it (i.e. the idea of ruling) most, till he is given the pledge of allegiance."

حَدَّثَنَا قُتَيْبَةُ بْنُ سَعِيدٍ، حَدَّثَنَا الْمُغِيرَةُ، عَنْ أَبِي الزِّنَادِ، عَنِ الأَعْرَجِ، عَنْ أَبِي هُرَيْرَةَ ـ رضى الله عنه ـ أَنَّ النَّبِيَّ صلى الله عليه وسلم قَالَ ‏"‏ النَّاسُ تَبَعٌ لِقُرَيْشٍ فِي هَذَا الشَّأْنِ، مُسْلِمُهُمْ تَبَعٌ لِمُسْلِمِهِمْ، وَكَافِرُهُمْ تَبَعٌ لِكَافِرِهِمْ ‏"‏‏.‏
"وَالنَّاسُ مَعَادِنُ، خِيَارُهُمْ فِي الْجَاهِلِيَّةِ خِيَارُهُمْ فِي الإِسْلاَمِ إِذَا فَقِهُوا، تَجِدُونَ مِنْ خَيْرِ النَّاسِ أَشَدَّ النَّاسِ كَرَاهِيَةً لِهَذَا الشَّأْنِ حَتَّى يَقَعَ فِيهِ."
Reference : Sahih al-Bukhari 3495, 3496
In-book reference : Book 61, Hadith 6
USC-MSA web (English) reference : Vol. 4, Book 56, Hadith 700
  (deprecated numbering scheme)