The Division of Spoils and Dishonesty regarding them - Section 2 Mishkat al-Masabih 4020
Arabic hadith text
وَعَنْ مُحَمَّدِ بْنِ أَبِي الْمُجَالِدِ عَنْ عَبْدِ اللَّهِ بْنِ أَبِي أَوْفَى قَالَ: قُلْتُ: هَلْ كُنْتُمْ تُخَمِّسُونَ الطَّعَامَ فِي عَهْدِ رَسُولِ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ؟ قَالَ: أَصَبْنَا طَعَامًا يَوْمَ خَيْبَرَ فَكَانَ الرَّجُلُ يَجِيءُ فَيَأْخُذُ مِنْهُ مقدارَ مَا يكفيهِ ثمَّ ينْصَرف. وَرَوَاهُ أَبُو دَاوُد
Translation
Muhammad b. Abul Mujalid reported ‘Abdallah b. Abu Aufa as saying he asked whether they set aside the fifth of food in the time of God’s Messenger and received the reply that on the day of Khaibar they captured food and a man would come and take as much of it as he needed and then go away. Abu Dawud transmitted it.