Hazrat Ali (may Allah be pleased with him) narrates that the Messenger of Allah (peace and blessings be upon him) said: There are four things such that a person can never taste the sweetness of faith until he wholeheartedly believes in them: These things are: to believe that there is no deity worthy of worship except Allah, He is alone; and certainly, I am the Messenger of Allah, Allah has sent me with the truth; and to believe that he will die and after death he will be raised again; and to accept every kind of destiny wholeheartedly.