Sayyidina Ali narrated: Allah’s Messenger (SAW) said, “No one is a Believer unless he believes in four things:
(1) He testifies that there is no God but Allah and that I am Allah’s Messenger and He sent me with the truth.
(2) He believes in death (being certain and does pious deeds before that).
(3) He believes in resurrection after death, and
(4) He believes in predestination.”
[Ahmed 758, Ibn Majah 81]
--------------------------------------------------------------------------------