Sunan an-Nasa'i 4138
سنن النسائي#4138SahihIt was narrated that 'Ubadah bin Al-Samit said:"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
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Abu GhuddahHasan Sahih
Al-AlbaniHasan Sahih
Zubair Ali ZaiSahih
In-book reference: 38:6