Sahih al-Bukhari, Hadith 4248 ⓘ
Narrated `Abdullah: The Prophet gave (the land of) Khaibar to the Jews (of Khaibar) on condition that they would work on it and cultivate it and they would have half of its yield.
حَدَّثَنَا مُوسَى بْنُ إِسْمَاعِيلَ، حَدَّثَنَا جُوَيْرِيَةُ، عَنْ نَافِعٍ، عَنْ عَبْدِ اللَّهِ ـ رضى الله عنه ـ قَالَ أَعْطَى النَّبِيُّ صلى الله عليه وسلم خَيْبَرَ الْيَهُودَ أَنْ يَعْمَلُوهَا وَيَزْرَعُوهَا، وَلَهُمْ شَطْرُ مَا يَخْرُجُ مِنْهَا.
also referenced under: Book 64, Hadith 283 (In-Book) & Volume 5, Book 59, Hadith 550 (USC-MSA)