Sunan Ibn Majah, Book 37, Hadith 4479 (In-Book) ⓘ
It was narrated from Abu Hurairah that the Messenger of Allah said: “In Paradise there is a tree under whose shade a rider could travel for one hundred years and never leave it.” "Recite, if you wish: 'And in shade long-extended (56:30).'"
حَدَّثَنَا أَبُو عُمَرَ الضَّرِيرُ، حَدَّثَنَا عَبْدُ الرَّحْمَنِ بْنُ عُثْمَانَ، عَنْ مُحَمَّدِ بْنِ عَمْرٍو، عَنْ أَبِي سَلَمَةَ، عَنْ أَبِي هُرَيْرَةَ، قَالَ قَالَ رَسُولُ اللَّهِ ـ صلى الله عليه وسلم ـ " إِنَّ فِي الْجَنَّةِ شَجَرَةً يَسِيرُ الرَّاكِبُ فِي ظِلِّهَا مِائَةَ سَنَةٍ لاَ يَقْطَعُهَا " . وَاقْرَءُوا إِنْ شِئْتُمْ {وَظِلٍّ مَمْدُودٍ * وَمَاءٍ مَسْكُوبٍ ) .
also referenced under: Hadith 4335 (Reference) & Volume 5, Book 37, Hadith 4335 (DarusSalam)