Aboo Hurairah narrated that the Messenger of Allaah said:
"I have left with you two things, that (if you hold fast to them)
you will never go astray (be misled) after them (as long as you hold fast to them):-
The Book of Allaah and my Sunnah. They will not separate from each other till they meet me on the
Hawdh (the pool of Paradise river water that flows outside the gates of Paradise on the Hereafter)."
[Malik and Al-Hakim]