A tradition states that Hazrat Ali (a.s.) said that fruits are of 120 kinds but the best among them is pomegranate. Pomegranate appeases the hunger and for those who already had their fill, pomegranate helps to digest the food. The Holy Prophet (s.a.w.a.) liked pomegranate the best and he never wanted to share it with others (the cause of which is shown in the next tradition).
A tradition coming from Imam Moosa Kazim (a.s.) states that a person should have one pomegranate first thing in the morning on a Friday, then his heart will remain bright for forty days. If he has two, it will remain bright for eighty days and if he has three, it will remain bright for one hundred and twenty days. That person will also be protected from the temptations of the devil and he who is safe from temptations is safe from sinning against God and he who does not sin against God will enter heaven.