Sunan At-Tirmidhi

Thawban narrated that the Messenger of Allah(s.a.w) said:""I only fear for my Ummah from the misguiding A'immah."" He said that the Messenger of Allah(s.a.w) said: ""There will never cease to be a group from my Ummah manifest upon the truth, they will not be harmed by those who forsake them until Allah's Decree comes