Narrated 'Abdullah bin Mughaffal: While we were besieging Khaibar, a person threw a leather container containing some fat and I ran to take it. Suddenly I looked behind, and behold! The Prophet was there. So I felt shy (to take it then).
— Sahih Bukhari, Volume 5, Book 59: Military Expeditions led by the Prophet (pbuh) (Al-Maghaazi), Hadith #525