Musannaf Ibn Abi Shayba 27:762

Muhammad ibn Bishr narrated to us, he said: Zakariyya narrated to us, he said: Sa’d ibn Ibrahim narrated to us that it reached him: That the Prophet, may Allah bless him and grant him peace, said: "The people are followers of Quraysh; their righteous ones follow their righteous ones, and their wicked ones follow their wicked ones."