Silsilat al-Ahadith al-Sahihah

It is narrated from Sayyiduna Imran bin Husain (may Allah be pleased with both of them) that the Messenger of Allah (peace and blessings of Allah be upon him) said: "A group from my Ummah will continue to fight for the truth, prevailing over those who oppose them, until the last of them will fight against the Messiah Dajjal."