Sahih Bukhari

Narrated Ibn `Umar:Allah's Messenger (ﷺ) said, ""Inform me of a tree which resembles a Muslim, giving its fruits at every season by the permission of its Lord, and the leaves of which do not fall."" I thought of the date-palm tree, but I disliked to speak because Abu Bakr and `Umar were present there. When nobody spoke, the Prophet (ﷺ) said, ""It is the date-palm tree"" When I came out with my father, I said, ""O father! It came to my mind that it was the date-palm tree."" He said, ""What prevented you from saying it?"" Had you said it, it would have been more dearer to me than such-and-such a thing (fortune)."" I said, ""Nothing prevented me but the fact that neither you nor Abu Bakr spoke, so I disliked to speak (in your presence)