This hadeeth comes under the following chapter: SAYING OF THE HOLY PROPHET (SALLALLAAHU ALAYHI WA SALLAM):" 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 his been narrated on the authority of Umair b. Umm Hani who said: I heard Mu'awiya say (while delivering a sermon from the pulpit) that he heard the Messenger of Allaah (sallAllaahu alayhi wa sallam) say: A group of people from my Umma will continue to obey Allaah's Command, and those who desert or oppose them shall not be able to do them any harm. They will be dominating the peeple until Allaah's Command is executed (i. e. Resurrection is established).