It was narrated that Anas bin Malik said:
"When the Messenger of Allah (ﷺ) conquered Khaibar, he gave it (to its people) in return for half (of its yield)." (FR)
English reference (FR): Vol. 3, Book 16, Hadith 2469 (FR)
Arabic reference (FR): Book 16, Hadith 2563 (FR)