Sahih Muslim Book 20, Hadith Number 4718.

Chapter : Saying of the Holy Prophet (may peace be upon him): “A group of people from my Umma will always remain on the right path and continue to be triumphant.’ their opponents shall not be able to do them any harm.

It has been narrated on the authority of Jabir b. ‘Abdullah who said: I heard the Messenger of Allah (may peace be upon him) say: A group of people from my Umma will continue to fight In defence of truth and remain triumphant until the Day of judgment.