From Sahih Muslim (Hadith 3965):
Abdullah b. Umar (Allah be pleased with them) reported that when Khaibar had been conquered, the Jews asked Allah's Messenger (ﷺ) to let them continue (cultivation in those lands) on half of the share of yield in fruits and crop, whereupon Allah's Messenger (ﷺ) said:I will allow you to continue here, so long as we would desire. The rest of the hadith is the same, but with this addition:" The fruit would be distributed equal to the half of Khaibar. And out of hall of the produce of the land, Allah's Apostle (may peace be be upon him) got the fifth part
Reference: Muslim 3965