The wealth of Banu an-Nadeer was among the fai' that Allah bestowed upon His Messenger ﷺ, for which the Muslims made no expedition with either cavalry or camelry (cf. al-Hashr 59:6). It was only for the Messenger of Allah ﷺ and he used to spend from it on his family's annual expenses-and on one occasion he said: his annual food supply -and what was left he spent on horses and weapons in preparation for jihad for the sake of Allah, may He be glorified and exalted,
كَانَتْ أَمْوَالُ بَنِي النَّضِيرِ مِمَّا أَفَاءَ اللهُ عَلَى رَسُولِهِ ﷺ مِمَّا لَمْ يُوجِفِ الْمُسْلِمُونَ عَلَيْهِ بِخَيْلٍ وَلا رِكَابٍ فَكَانَتْ لِرَسُولِ اللهِ ﷺ خَالِصَةً وَكَانَ يُنْفِقُ عَلَى أَهْلِهِ مِنْهَا نَفَقَةَ سَنَتِهِ وَقَالَمَرَّةً قُوتَ سَنَتِهِ وَمَا بَقِيَ جَعَلَهُ فِي الْكُرَاعِ وَالسِّلاحِ عُدَّةً فِي سَبِيلِ اللهِ ﷻ