مَنْ جَهَّزَ غَازِيًا فِي سَبِيلِ اللَّهِ؛ فَقَدْ غَزَا، وَمَنْ خَلَفَ غَازِيًا فِي أَهْلِهِ؛ فَقَدْ غَزَا
Whoever equips a person going forth in Allah’s cause has shared in that striving; and whoever looks after his family in his absence has likewise shared in it.
Source: البخاري ومسلم
جَهَّزَ (root ج ه ز) means to equip or supply what is needed. خَلَفَ غَازِيًا فِي أَهْلِهِ means looking after a person's family during that person's absence. The phrase فَقَدْ غَزَا is the response to the condition, linked by فَـ.
The key educational point is that service can include dependable support behind the scenes; the person undertaking the visible task is not the only contributor. The report belongs to a particular historical and legal context and is not a license for self-directed violence. Here the focus is on lawful responsibility, support, and care for dependents.