"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  

[Machine] The Prophet ﷺ took a portion from the side of a camel and said, "O people, it is not permissible for me to take from what Allah has granted you, the amount of this, except for one-fifth, and one-fifth is to be returned to you."  

أَخَذَ النَّبِيُّ ﷺ وَبَرَةً مِنْ جَنْبِ بَعِيرٍ فَقَالَ أَيُّهَا النَّاسُ إِنَّهُ لَا يَحِلُّ لِي مِمَّا أَفَاءَ اللهُ عَلَيْكُمْ قَدْرَ هَذِهِ إِلَّا الْخُمُسُ وَالْخُمُسُ مَرْدُودٌ عَلَيْكُمْ  

[Machine] The Prophet took a portion of the spoils of war from a camel's side on the day of Hunayn and said, "O people, it is not permissible for me to take from what Allah has bestowed upon you the size of this except for one-fifth. And one-fifth is to be returned to you. By Allah, I know how it is to be returned in your best interests."  

أَخَذَ النَّبِيُّ ﷺ يَوْمَ حُنَيْنٍ وَبَرَةً مِنْ جَنْبِ بَعِيرٍ فَقَالَ يَا أَيُّهَا النَّاسُ إِنَّهُ لَا يَحِلُّ لِي مِمَّا أَفَاءَ اللهُ عَلَيْكُمْ قَدْرَ هَذِهِ إِلَّا الْخُمُسُ وَالْخُمُسُ مَرْدُودٌ عَلَيْكُمْ يَعْنِي وَاللهُ أَعْلَمُ مَرْدُودٌ فِي مَصَالِحِكُمْ