Hadith 22:5
Abdullah b. Umar (Allah be pleased with them) reported that Allah's Messenger (ﷺ) returned to the Jews of Khaibar the date-palms of Khaibar and its land on the condition that they should work upon them with their own wealth (seeds, implements), and give half of the yield to Allah's Messenger (ﷺ).
وَحَدَّثَنَا ابْنُ رُمْحٍ، أَخْبَرَنَا اللَّيْثُ، عَنْ مُحَمَّدِ بْنِ عَبْدِ الرَّحْمَنِ، عَنْ نَافِعٍ، عَنْ عَبْدِ، اللَّهِ بْنِ عُمَرَ عَنْ رَسُولِ اللَّهِ صلى الله عليه وسلم أَنَّهُ دَفَعَ إِلَى يَهُودِ خَيْبَرَ نَخْلَ خَيْبَرَ وَأَرْضَهَا عَلَى أَنْ يَعْتَمِلُوهَا مِنْ أَمْوَالِهِمْ وَلِرَسُولِ اللَّهِ صلى الله عليه وسلم شَطْرُ ثَمَرِهَا
Original Reference: Sahih Muslim 1551 e