Narrated Bashir ibn Yasar:

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.

حَدَّثَنَا مُحَمَّدُ بْنُ مِسْكِينٍ الْيَمَامِيُّ، حَدَّثَنَا يَحْيَى بْنُ حَسَّانَ، حَدَّثَنَا سُلَيْمَانُ، - يَعْنِي ابْنَ بِلاَلٍ - عَنْ يَحْيَى بْنِ سَعِيدٍ، عَنْ بُشَيْرِ بْنِ يَسَارٍ، أَنَّ رَسُولَ اللَّهِ ﷺ لَمَّا أَفَاءَ اللَّهُ عَلَيْهِ خَيْبَرَ قَسَمَهَا سِتَّةً وَثَلاَثِينَ سَهْمًا جَمْعًا فَعَزَلَ لِلْمُسْلِمِينَ الشَّطْرَ ثَمَانِيَةَ عَشَرَ سَهْمًا يَجْمَعُ كُلُّ سَهْمٍ مِائَةً النَّبِيُّ ﷺ مَعَهُمْ لَهُ سَهْمٌ كَسَهْمِ أَحَدِهِمْ وَعَزَلَ رَسُولُ اللَّهِ ﷺ ثَمَانِيَةَ عَشَرَ سَهْمًا وَهُوَ الشَّطْرُ لِنَوَائِبِهِ وَمَا يَنْزِلُ بِهِ مِنْ أَمْرِ الْمُسْلِمِينَ فَكَانَ ذَلِكَ الْوَطِيحَ وَالْكُتَيْبَةَ وَالسُّلاَلِمَ وَتَوَابِعَهَا فَلَمَّا صَارَتِ الأَمْوَالُ بِيَدِ النَّبِيِّ ﷺ وَالْمُسْلِمِينَ لَمْ يَكُنْ لَهُمْ عُمَّالٌ يَكْفُونَهُمْ عَمَلَهَا فَدَعَا رَسُولُ اللَّهِ ﷺ الْيَهُودَ فَعَامَلَهُمْ .