Sayyiduna Anas (may Allah be pleased with him) narrates: The Prophet (peace and blessings be upon him) gave Khaybar (to the Jews) in return for half (or, the narrator is unsure, perhaps the words were:) a third of the produce.
Al-Bazzar recorded it; its chain contains a narrator, al-Khazraj bin al-Khattab, whom al-Azdi declared weak.
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب البيوع / 6597