Sunan of Abu Dawood Book 20, Hadith 3012

حَدَّثَنَا حُسَيْنُ بْنُ عَلِيٍّ، حَدَّثَنَا مُحَمَّدُ بْنُ فُضَيْلٍ، عَنْ يَحْيَى بْنِ سَعِيدٍ، عَنْ بُشَيْرِ بْنِ يَسَارٍ، مَوْلَى الأَنْصَارِ عَنْ رِجَالٍ، مِنْ أَصْحَابِ النَّبِيِّ صلى الله عليه وسلم أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم لَمَّا ظَهَرَ عَلَى خَيْبَرَ قَسَمَهَا عَلَى سِتَّةٍ وَثَلاَثِينَ سَهْمًا جَمَعَ كُلُّ سَهْمٍ مِائَةَ سَهْمٍ فَكَانَ لِرَسُولِ اللَّهِ صلى الله عليه وسلم وَلِلْمُسْلِمِينَ النِّصْفُ مِنْ ذَلِكَ وَعَزَلَ النِّصْفَ الْبَاقِيَ لِمَنْ نَزَلَ بِهِ مِنَ الْوُفُودِ وَالأُمُورِ وَنَوَائِبِ النَّاسِ ‏.‏

Narrated A Group of Companions of the Prophet: Bashir ibn Yasar, the client of the Ansar, reported on the authority of a group of the Companions of the Prophet (ﷺ): When the Messenger of Allah (ﷺ) conquered Khaybar, he divided it into thirty-six lots, each lot comprising one hundred portions. One half of it was for the Messenger of Allah (ﷺ) and for the Muslims; and he separated the remaining half for the deputations which came to him, other matters and emergent needs of the people