The Messenger of Allah ﷺ led us in prayer facing a camel which had been taken in booty, and when he had given the salutation, he took a hair from the camel's side and said: I have no right as much as this of your booty, but only to the fifth. and the fifth is returned to you.  

صَلَّى بِنَا رَسُولُ اللَّهِ ﷺ إِلَى بَعِيرٍ مِنَ الْمَغْنَمِ فَلَمَّا سَلَّمَ أَخَذَ وَبَرَةً مِنْ جَنْبِ الْبَعِيرِ ثُمَّ قَالَ وَلاَ يَحِلُّ لِي مِنْ غَنَائِمِكُمْ مِثْلُ هَذَا إِلاَّ الْخُمُسَ وَالْخُمُسُ مَرْدُودٌ فِيكُمْ