In the Sahihain it is narrated that ‘Abdullah bin Umar said.’ “While we were sitting with the Messenger of Allah he was brought a jummar of a date tree. The Prophet said:
“There is a tree that resembles the Muslim as its leaves never fall.”
Jummar is cold and dry in the first degree, and it seals the ulcers and relieves hemorrhage, diarrhea, yellow bile and blood pressure. In addition, the jummar is not harmful, but is not nutritious and is difficult to digest. The jummar is all benefit and this is why the Prophet said it resembled the Muslim, because of his tremendous usefulness and goodness.