Sahih al-Bukhari 6144
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).
حَدَّثَنَا مُسَدَّدٌ، حَدَّثَنَا يَحْيَى، عَنْ عُبَيْدِ اللَّهِ، حَدَّثَنِي نَافِعٌ، عَنِ ابْنِ عُمَرَ ـ رضى الله عنهما ـ قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم ‏"‏ أَخْبِرُونِي بِشَجَرَةٍ مَثَلُهَا مَثَلُ الْمُسْلِمِ، تُؤْتِي أُكُلَهَا كُلَّ حِينٍ بِإِذْنِ رَبِّهَا، وَلاَ تَحُتُّ وَرَقَهَا ‏"‏‏.‏ فَوَقَعَ فِي نَفْسِي أَنَّهَا النَّخْلَةُ، فَكَرِهْتُ أَنْ أَتَكَلَّمَ وَثَمَّ أَبُو بَكْرٍ وَعُمَرُ، فَلَمَّا لَمْ يَتَكَلَّمَا قَالَ النَّبِيُّ صلى الله عليه وسلم ‏"‏ هِيَ النَّخْلَةُ ‏"‏‏.‏ فَلَمَّا خَرَجْتُ مَعَ أَبِي قُلْتُ يَا أَبَتَاهْ وَقَعَ فِي نَفْسِي أَنَّهَا النَّخْلَةُ‏.‏ قَالَ مَا مَنَعَكَ أَنْ تَقُولَهَا لَوْ كُنْتَ قُلْتَهَا كَانَ أَحَبَّ إِلَىَّ مِنْ كَذَا وَكَذَا‏.‏ قَالَ مَا مَنَعَنِي إِلاَّ أَنِّي لَمْ أَرَكَ وَلاَ أَبَا بَكْرٍ تَكَلَّمْتُمَا، فَكَرِهْتُ‏.‏