Abu Hurairah (R.A) narrates that Rasulullah (Sallallahu ‘Alayhe Wa Sallam) said: All of my Ummah will enter into Paradise (Jannah), except he who refused. The Sahabah said: O Rasulullah! And who would refuse? He replied: He who obeyed me entered Paradise, and who disobeyed me, refused!
[Bukhari]