Sunan Ibn Majah, Book 37, Hadith 4290 (In-Book) ⓘ
It was narrated that ‘Aishah said: “The bed of the Messenger of Allah was made of leather, stuffed with fibers of date-palm trees.”
حَدَّثَنَا عَبْدُ اللَّهِ بْنُ سَعِيدٍ، حَدَّثَنَا عَبْدُ اللَّهِ بْنُ نُمَيْرٍ، وَأَبُو خَالِدٍ عَنْ هِشَامِ بْنِ عُرْوَةَ، عَنْ أَبِيهِ، عَنْ عَائِشَةَ، قَالَتْ كَانَ ضِجَاعُ رَسُولِ اللَّهِ ـ صلى الله عليه وسلم ـ أَدَمًا حَشْوُهُ لِيفٌ .
also referenced under: Hadith 4151 (Reference) & Volume 5, Book 37, Hadith 4151 (DarusSalam)