صَحِيحُ مُسْلِمٍ
Sahih Muslim 1819
The Book on Government
The people follow the Quraish and the Caliphate belongs to the Quraish
وَحَدَّثَنِي يَحْيَى بْنُ حَبِيبٍ الْحَارِثِيُّ، حَدَّثَنَا رَوْحٌ، حَدَّثَنَا ابْنُ جُرَيْجٍ، حَدَّثَنِي أَبُو الزُّبَيْرِ أَنَّهُ سَمِعَ جَابِرَ بْنَ عَبْدِ اللَّهِ، يَقُولُ قَالَ النَّبِيُّ صلى الله عليه وسلم النَّاسُ تَبَعٌ لِقُرَيْشٍ فِي الْخَيْرِ وَالشَّرِّ .
It has been narrated on the authority of Jabir b. 'Abdullah that the Messenger of Allah (ﷺ) said: People are the followers of Quraish in good as well as evil (i. e. in the customs of Islamic as well as pre-Islamic times).
Sahih Muslim, 1819Sahihصحيح