(1) باب
It was narrated from 'Amr bin Shu'aib, from his father, from his grandfather, that:
the Messenger of Allah went to a camel, and took a hair from its hump between his fingers and said: "I am not entitled to take anything from the Fay, not even this, except the Khumus, and the Khumus will come back to you."
Reference: Sunan an-Nasa'i 4139
In-book reference: Book 38, Hadith 7
English translation: Vol. 5, Book 38, Hadith 4144