"On the day of Hunain the Messenger of Allah took a hair from the side of a camel and said: 'O you people, it is not permissible for me to take even the equivalent of this from the Fay' that Allah has bestowed upon you, except the Khumus, and the Khumus will come back to you." (Sahih) Abu 'Abdur-Rahman (An-Nasa'i) said: Abu Sallam's name is Mamtur and he is Ethiopian, and Abu Umamah's name is Sudai bin 'Ajlan.

أَخَذَ رَسُولُ اللَّهِ ﷺ يَوْمَ حُنَيْنٍ وَبَرَةً مِنْ جَنْبِ بَعِيرٍ فَقَالَ يَا أَيُّهَا النَّاسُ إِنَّهُ لاَ يَحِلُّ لِي مِمَّا أَفَاءَ اللَّهُ عَلَيْكُمْ قَدْرَ هَذِهِ إِلاَّ الْخُمُسُ وَالْخُمُسُ مَرْدُودٌ عَلَيْكُمْ

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

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. (Using translation from Abū Dāʾūd 2755)

سَمِعْتُ عَمْرَو بْنَ عَبَسَةَ يَقُولُ صَلَّى بِنَا رَسُولُ اللَّهِ ﷺ إِلَى بَعِيرٍ مِنَ الْمَغْنَمِ فَلَمَّا سَلَّمَ أَخَذَ وَبَرَةً مِنْ جَنْبِ الْبَعِيرِ فَقَالَ «إِنَّهُ لَا يَحِلُّ لِي مِنْ هَذَا الْمَغْنَمِ مِثْلُ هَذِهِ إِلَّا الْخُمُسَ وَالْخُمُسُ مَرْدُودٌ عَلَيْكُمْ»