(21) باب مَا جَاءَ فِي سَهْمِ الصَّفِيِّ
'Amir Al Sha'bi said "The Prophet (ﷺ) had a special portion in the booty called safi. This would be a slave if he desired or a slave girl if he desired or a horse if he desired. He would choose it before taking out the fifth."
Reference: Sunan Abi Dawud 2991
In-book reference: Book 20, Hadith 64
English translation: Book 19, Hadith 2985