Khaybar was divided among the people of al-Hudaybiyyah. The Messenger of Allah (ﷺ) divided it into eighteen portions. The army contained one thousand and five hundred people. There were three hundred horsemen among them. He gave double share to the horsemen, and a single to the footmen.
Sunan Abi Dawud Book 20, Hadith 88
← Previous Hadith When Allah bestowed Khaybar on the Messenger of Allah (ﷺ) as fay' (spoils of war without fighting), he divided the whole into thirty six lots. He put aside a half, i.e. eighteen lots, for the Muslims. Each lot comprised one hundred shares, and the Prophet (ﷺ) was with them. He received a share like the share of one of them.

The Messenger of Allah (ﷺ) separated eighteen lots, that is, half, for his future needs and whatever befell the Muslims. These were al-Watih, al-Kutaybah, as-Salalim and their colleagues. When all this property came in the possession of the Prophet (ﷺ) and of the Muslims, they did not have sufficient labourers to work on it. The Messenger of Allah (ﷺ) called Jews and employed them on contract.

Sunan Abi Dawud Book 20, Hadith 87 Next Hadith → Abdullah ibn AbuBakr and some children of Muhammad ibn Maslamah said: There remained some people of Khaybar and they confined themselves to the fortresses. They asked the Messenger of Allah (ﷺ) to protect their lives and let them go. He did so. The people of Fadak heard this; they also adopted a similar way. (Fadak) was, therefore, exclusively reserved for the Messenger of Allah (ﷺ), for it was not captured by the expedition of cavalry and camelry.

Sunan Abi Dawud Book 20, Hadith 89