Sunan Ibn Majah
10
Sahih+3

It was narrated from Thawban that:The Messenger of Allah (ﷺ) said: "A group among my Ummah will continue to follow the truth and prevail, and those who oppose them will not be able to harm them, until the command of Allah comes to pass

SahihAl-Albani
SahihMuhammad Fouad Abd al-Baqi