NASAI-KUBRA 4375: from Zayd b. Khālid al-Juhanī —
Zaid bin Khalid al Juhani reported that Apostle of Allaah ﷺ as saying “He who equips a fighter in Allaah’s path has taken part in the fighting. And he looks after a fighter’s family when he is away has taken part in the fighting.” (Using translation from Abū Dāʾūd 2509)

الكبرى للنسائي ٤٣٧٥: عن زيد بن خالد الجهني —
عَنْ رَسُولِ اللهِ ﷺ قَالَ «مَنْ جَهَّزَ غَازِيًا فِي سَبِيلِ اللهِ فَقَدْ غَزَا وَمَنْ خَلَّفَ غَازِيًا فِي أَهْلِهِ بِخَيْرٍ فَقَدْ غَزَا»


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Nasāʾī's Kubrá > Struggle in the Path of Allah > § [Machine] The merit of someone who prepares a warrior
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