Sahih al-Bukhari, Book 54, Hadith 9 (In-Book) ⓘ
Narrated `Abdullah bin `Umar: Allah's Messenger gave the land of Khaibar to the Jews on the condition that they would work on it and cultivate it and they would get half of its yield.
حَدَّثَنَا مُوسَى، حَدَّثَنَا جُوَيْرِيَةُ بْنُ أَسْمَاءَ، عَنْ نَافِعٍ، عَنْ عَبْدِ اللَّهِ ـ رضى الله عنه ـ قَالَ أَعْطَى رَسُولُ اللَّهِ صلى الله عليه وسلم خَيْبَرَ الْيَهُودَ أَنْ يَعْمَلُوهَا وَيَزْرَعُوهَا، وَلَهُمْ شَطْرُ مَا يَخْرُجُ مِنْهَا.
also referenced under: Hadith 2720 (DarusSalam) & Volume 3, Book 50, Hadith 881 (USC-MSA)