Narrated Ibn 'Umar:

We were with the Prophet and a spadix of date-palm tree was brought to him. On that he said, "Amongst the trees, there is a tree which resembles a Muslim." I wanted to say that it was the date-palm tree but as I was the youngest of all (of them) I kept quiet. And then the Prophet ﷺ said, "It is the date-palm tree."

حَدَّثَنَا عَلِيٌّ، حَدَّثَنَا سُفْيَانُ، قَالَ قَالَ لِي ابْنُ أَبِي نَجِيحٍ عَنْ مُجَاهِدٍ، قَالَ صَحِبْتُ ابْنَ عُمَرَ إِلَى الْمَدِينَةِ فَلَمْ أَسْمَعْهُ يُحَدِّثُ عَنْ رَسُولِ اللَّهِ ﷺ إِلاَّ حَدِيثًا وَاحِدًا، قَالَ كُنَّا عِنْدَ النَّبِيِّ ﷺ فَأُتِيَ بِجُمَّارٍ فَقَالَ " إِنَّ مِنَ الشَّجَرِ شَجَرَةً مَثَلُهَا كَمَثَلِ الْمُسْلِمِ ". فَأَرَدْتُ أَنْ أَقُولَ هِيَ النَّخْلَةُ، فَإِذَا أَنَا أَصْغَرُ الْقَوْمِ فَسَكَتُّ، قَالَ النَّبِيُّ ﷺ " هِيَ النَّخْلَةُ ".