Narrated Ibn 'Umar:

The Prophet ﷺ said, "The example of a believer is like a green tree, the leaves of which do not fall." The people said. "It is such-and-such tree: It is such-and-such tree." I intended to say that it was the datepalm tree, but I was a young boy and felt shy (to answer). The Prophet ﷺ said, "It is the date-palm tree." Ibn 'Umar added, " I told that to 'Umar who said, 'Had you said it, I would have preferred it to such-and such a thing."

حَدَّثَنَا آدَمُ، حَدَّثَنَا شُعْبَةُ، حَدَّثَنَا مُحَارِبُ بْنُ دِثَارٍ، قَالَ سَمِعْتُ ابْنَ عُمَرَ، يَقُولُ قَالَ النَّبِيُّ ﷺ " مَثَلُ الْمُؤْمِنِ كَمَثَلِ شَجَرَةٍ خَضْرَاءَ، لاَ يَسْقُطُ وَرَقُهَا، وَلاَ يَتَحَاتُّ ". فَقَالَ الْقَوْمُ هِيَ شَجَرَةُ كَذَا. هِيَ شَجَرَةُ كَذَا، فَأَرَدْتُ أَنْ أَقُولَ هِيَ النَّخْلَةُ. وَأَنَا غُلاَمٌ شَابٌّ فَاسْتَحْيَيْتُ، فَقَالَ " هِيَ النَّخْلَةُ ". وَعَنْ شُعْبَةَ حَدَّثَنَا خُبَيْبُ بْنُ عَبْدِ الرَّحْمَنِ عَنْ حَفْصِ بْنِ عَاصِمٍ عَنِ ابْنِ عُمَرَ مِثْلَهُ وَزَادَ فَحَدَّثْتُ بِهِ عُمَرَ فَقَالَ لَوْ كُنْتَ قُلْتَهَا لَكَانَ أَحَبَّ إِلَىَّ مِنْ كَذَا وَكَذَا.