Musnad Ahmad 626:33

Yazid narrated to us, Ismail—meaning Ibn Abi Khalid—informed us, from Qays ibn Abi Hazim, from al-Mughirah ibn Shu'bah, from the Prophet, peace and blessings of Allah be upon him, who said: "People from my nation will continue to fight for the truth, being manifest, until the command of Allah, the Almighty and Majestic, comes to them."