Silsilah as-Sahihah 289 — Twelve Qurayshi caliphs before the Hour

It is narrated from Sayyiduna Jabir bin Samurah, may Allah be pleased with him, that the Messenger of Allah, peace and blessings be upon him, said: "This religion will remain established until the Day of Resurrection, or until twelve caliphs have assumed the seat of caliphate, and all of them will be from the Quraysh."