Silsilah Sahihah

It is narrated from Sayyiduna Utbah bin Abdullah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings of Allah be upon him) said: "The caliphate will be among the Quraysh, the office of judge among the Ansar, the call and propagation among the Abyssinians, and migration among the Muslims and among the later emigrants."