Sunan Ibn Majah, Hadith 2397 ⓘ
It was narrated that Ibn 'Umar said: “Umar bin Khattab said: 'O Messenger of Allah, the one hundred shares of the Khaibar I have never been given any wealth that is more beloved to me than them, and I wanted to give them in charity.' The Prophet said: 'Make it an endowment and give its produce in the cause of Allah (SWT).”
حَدَّثَنَا مُحَمَّدُ بْنُ أَبِي عُمَرَ الْعَدَنِيُّ، حَدَّثَنَا سُفْيَانُ، عَنْ عُبَيْدِ اللَّهِ بْنِ عُمَرَ، عَنْ نَافِعٍ، عَنِ ابْنِ عُمَرَ، قَالَ قَالَ عُمَرُ بْنُ الْخَطَّابِ يَا رَسُولَ اللَّهِ إِنَّ الْمِائَةَ سَهْمٍ الَّتِي بِخَيْبَرَ لَمْ أُصِبْ مَالاً قَطُّ هُوَ أَحَبُّ إِلَىَّ مِنْهَا وَقَدْ أَرَدْتُ أَنْ أَتَصَدَّقَ بِهَا فَقَالَ النَّبِيُّ صلى الله عليه وسلم " احْبِسْ أَصْلَهَا وَسَبِّلْ ثَمَرَتَهَا " .
also referenced under: Book 15, Hadith 2487 (In-Book) & Volume 3, Book 15, Hadith 2397 (DarusSalam)