I heard the Messenger of Allah ﷺ say, or he said that the Messenger of Allah ﷺ said, "After me there will be twelve caliphs, all of them from Quraysh."Then he returned to his home, and the Quraysh came to him and asked, "Then what will happen?"He replied, "Then there will be turmoil."
حدثنا هاشم حدثنا زهير حدثنا زياد بن خيثمة عن الأسود بن سعيد الهمداني
سمعت رسول الله ﷺ أو قال قال رسول الله ﷺ يكون بعدي اثنا عشر خليفة كلهم من قريش قال ثم رجع إلى منزله فأتته قريش فقالوا ثم يكون ماذا قال ثم يكون الهرج
No references are available.
Its isnad is sahih. Ziyad bin Khaythama Jufi is trustworthy, his hadith is found in Muslim, and Aswad bin Saeed Hamdani Kufi is reliable, his hadith is found in Abu Dawud, and the hadith is like the one before it.