Sunan an-Nasa'i, Hadith 3180 ⓘ
It was narrated from Zaid bin Khalid that the Messenger of Allah said: "Whoever equips a warrior in the cause of Allah has fought, and whoever looks after his family in his absence has fought."
أَخْبَرَنَا سُلَيْمَانُ بْنُ دَاوُدَ، وَالْحَارِثُ بْنُ مِسْكِينٍ، قِرَاءَةً عَلَيْهِ وَأَنَا أَسْمَعُ، عَنِ ابْنِ وَهْبٍ، قَالَ أَخْبَرَنِي عَمْرُو بْنُ الْحَارِثِ، عَنْ بُكَيْرِ بْنِ الأَشَجِّ، عَنْ بُسْرِ بْنِ سَعِيدٍ، عَنْ زَيْدِ بْنِ خَالِدٍ، عَنْ رَسُولِ اللَّهِ صلى الله عليه وسلم قَالَ " مَنْ جَهَّزَ غَازِيًا فِي سَبِيلِ اللَّهِ فَقَدْ غَزَا وَمَنْ خَلَفَهُ فِي أَهْلِهِ بِخَيْرٍ فَقَدْ غَزَا " .
also referenced under: Book 25, Hadith 96 (In-Book) & Volume 4, Book 25, Hadith 3182 (DarusSalam)