The properties of Bam An-Nadir were among the booty that Allah gave to His Apostle such Booty
were not obtained by any expedition on the part of Muslims, neither with cavalry, nor with camelry.
So those properties were for Allah's Messenger (ﷺ) only, and he used to provide thereof the yearly
expenditure for his wives, and dedicate the rest of its revenues for purchasing arms and horses as war
material to be used in Allah's Cause.
Sahih al-Bukhari Book 65, Hadith 405