Sayyidina lbn Umar (RA) reported that Allah’s Messenger (SAW) said, “There is among trees, a tree whose leaves do not fall. It is like a believer. Tell me what it is”? Abdullah said the people thought of the trees of the wild while I thought of the date tree.” The Prophet (SAW) disclosed that it is the date (palm) tree. Abdullah siad, “I was shy to speak.” He said, “I narrated to Umar (RA) what had transpired with me. He said, ‘If you had spoken, that would have been dearer to me than that I had this and that.’”
[Ahmed 5274,Bukhari 61,Muslim 2811]