Amir Al Shabi 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. ”
Hadith Referenceسنن ابي داود / كتاب الخراج والفيء والإمارة / 2991
Hadith Gradingالألبانی:ضعيف الإسناد | زبیر علی زئی:ضعيف, إسناده ضعيف, نسائي (4150), السند صحيح إلي الشعبي لكنه مرسل, انوار الصحيفه، صفحه نمبر 108
Hadith Takhrij« سنن النسائی/الفيء 1 (4150)، (تحفة الأشراف: 18868) (ضعیف الإسناد) » (عامر تابعی ہیں، اس لئے یہ روایت مرسل ہے)
Explanation & Benefits
Shaykh Umar Farooq Saeedi
Benefits and Issues: The Noble Prophet sallallahu alayhi wa sallam, if he liked any particular item from the spoils of war, could take it before the khums (one-fifth) was set aside. For example: A slave woman, A slave man, A sword, Or any other item—this is called "safiy" (special selection).
Source: Sunan Abu Dawood – Commentary by Shaykh Umar Farooq Saeedi, Page: 2991