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.  

كُنَّا مُحَاصِرِينَ قَصْرَ خَيْبَرَ فَرَمَى إِنْسَانٌ بِجِرَابٍ فِيهِ شَحْمٌ فَنَزَوْتُ لآخُذَهُ فَالْتَفَتُّ فَإِذَا النَّبِيُّ ﷺ فَاسْتَحْيَيْتُ مِنْهُ