Sahih al-Bukhari, Book 3, Hadith 4 (In-Book) ⓘ

Narrated Ibn `Umar: The Prophet said, "Amongst the trees, there is a tree, the leaves of which do not fall and is like a Muslim. Tell me the name of that tree." Everybody started thinking about the trees of the desert areas. And I thought of the date-palm tree. The others then asked, "Please inform us what is that tree, O Allah's Messenger?" He replied, "It is the date-palm tree."

حَدَّثَنَا خَالِدُ بْنُ مَخْلَدٍ، حَدَّثَنَا سُلَيْمَانُ، حَدَّثَنَا عَبْدُ اللَّهِ بْنُ دِينَارٍ، عَنِ ابْنِ عُمَرَ، عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ ‏"‏ إِنَّ مِنَ الشَّجَرِ شَجَرَةً لاَ يَسْقُطُ وَرَقُهَا، وَإِنَّهَا مَثَلُ الْمُسْلِمِ، حَدِّثُونِي مَا هِيَ ‏"‏‏.‏ قَالَ فَوَقَعَ النَّاسُ فِي شَجَرِ الْبَوَادِي‏.‏ قَالَ عَبْدُ اللَّهِ فَوَقَعَ فِي نَفْسِي أَنَّهَا النَّخْلَةُ، ثُمَّ قَالُوا حَدِّثْنَا مَا هِيَ يَا رَسُولَ اللَّهِ قَالَ ‏"‏ هِيَ النَّخْلَةُ ‏"‏‏.‏