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.

'Umar said explaining the verse: "What Allah has bestowed on His Apostle (and taken away) from them - for this ye made no expedition with either cavalry or camelry" this belonged specially to the Messenger of Allah (ﷺ): lands of 'Urainah, Fadak, and so-and-so. What Allah as bestowed on His Apostle (and taken away) from the people of the townships - belong to Allah - to the Apostle, and to kindred and orphans, the needy and the wayfarer, to the indigent emigrants, those who were expelled from their homes and their property, and to those who, before them, had homes (in Medina), and had adopted the faith, and to those who came after them. This verse completely covered all the people ; they remained no one from Muslims but he had his right in it, or share (according to Ayyub's version) except the slaves.

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.

The properties of Banu al-Nadir were part of what Allah bestowed on His Apostle from what the Muslims has not ridden on horses or camels to get; so they belonged specially to the Messenger of Allah (ﷺ) who gave his family their annual contribution. Ibn 'Abdah said: His family (ahlihi) and not the members of his houses (ahl baitihi) ; then applied what remained for horses and weapons in Allah's path.

The properties abandoned by Banu Nadir were the ones which Allah bestowed upon His Apostle for which no expedition was undertaken either with cavalry or camelry. These properties were particularly meant for the Prophet (ﷺ). He would meet the annual expenditure of his family from the income thereof, and would spend what remained for purchasing horses and weapons as preparation for Jihad.