(80) باب الْمِجَنِّ وَمَنْ يَتَتَرَّسُ بِتُرْسِ صَاحِبِهِ
Narrated `Umar:
The properties of Bani An-Nadir which Allah had transferred to His Apostle as Fai Booty were not gained by the Muslims with their horses and camels. The properties therefore, belonged especially to Allah's Messenger (ﷺ) who used to give his family their yearly expenditure and spend what remained thereof on arms and horses to be used in Allah's Cause.
Reference: Sahih al-Bukhari 2904
In-book reference: Book 56, Hadith 118
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 4, Book 52, Hadith 153