One-fifth of Booty to the Cause of Allah (Khumus)
57/20. Chapter:
The food gained as war booty in the battlefield
Sahih Bukhari
حَدَّثَنَا أَبُو الْوَلِيدِ، حَدَّثَنَا شُعْبَةُ، عَنْ حُمَيْدِ بْنِ هِلاَلٍ، عَنْ عَبْدِ اللَّهِ بْنِ مُغَفَّلٍ ـ رضى الله عنه ـ قَالَ كُنَّا مُحَاصِرِينَ قَصْرَ خَيْبَرَ، فَرَمَى إِنْسَانٌ بِجِرَابٍ فِيهِ شَحْمٌ، فَنَزَوْتُ لآخُذَهُ، فَالْتَفَتُّ فَإِذَا النَّبِيُّ صلى الله عليه وسلم فَاسْتَحْيَيْتُ مِنْهُ.
Narrated `Abdullah bin Mughaffal: While we were besieging the fort of Khaibar, a person threw a leather container containing fat, and I ran to take it, but when I turned I saw the Prophet (standing behind), so I felt embarrassed in front of him.
Reference : Sahih al-Bukhari 3153In-book reference : Book 57, Hadith 61USC-MSA web (English) reference : Vol. 4, Book 53, Hadith 381