Musannaf Ibn Abi Shayba 27:843

Waki’ narrated to us, from Sufyan, from Sa’d ibn Ibrahim, from ‘Abd al-Rahman ibn Hurmuz, from Abu Hurayrah, from the Prophet, peace and blessings of Allah be upon him, who said: "Quraysh, the Ansar, Aslam, and Ghifar are allies (mawali) of Allah and His Messenger, and they have no ally (mawla) other than Him."