The MESSENGER OF ALLAH (SAWW) said:
ALLAH (SWT) will register the highest level of faith for those who love ALI (ASWS) in his life and after his death.
But those who hate ALI (ASWS) in his life of after his death will die as pagans and they will be judged for their deeds.
(Ref: Bihar 369:285, AmaALI of Sadouq 467, Elal Al Sharaaie 144)